Read the story excerpt and answer the question.
In the winter of 1888, fourteen-year-old Clara sat huddled near the cast-iron stove in the Montpelier telegraph depot. Outside, a furious nor'easter howled across the Green Mountains, burying roads under drifts of heavy white snow. Clara's father, the head station operator, was stuck two miles down the ridge attempting to clear a fallen timber from the tracks. Clara had promised to watch the brass telegraph key, though she expected little activity on such a blizzard-blinded evening.
At eight o'clock, the brass sounder suddenly clattered to life with frantic, sharp clicks: dot-dot-dot, dash-dash-dash, dot-dot-dot. Clara froze—the international signal for distress. She grabbed her pencil and pad, translating the rhythmic clicks as her heart hammered against her ribs: THE DOWN-EXPRESS TRAIN IS STALLED AT BURNHAM CUT. ENGINE FIRES OUT. SIXTY PASSENGERS IN FREEZING CARS. NEED ASSISTANCE IMMEDIATELY.
Clara knew the stationmaster at Waterbury was off duty, and the main telephone wire was down. If help did not reach Burnham Cut within hours, the stranded passengers would face severe frostbite. Clutching the message pad, she reached for the transmitter key. Her fingers hesitated for a split second—she had passed her telegraphy exam only two weeks ago and had never handled an emergency alone. Taking a deep breath, Clara firmly tapped out the relay code to the Burlington division yards, requesting an emergency snowplow engine and thermal blankets. As the Burlington operator clicked back his confirmation—MESSAGE RECEIVED, EN ROUTE—Clara leaned back, the warmth of the stove returning to her cold hands.
What feeling is conveyed by the ending phrase, "Clara leaned back, the warmth of the stove returning to her cold hands"?
- ABoredom and indifference toward the train passengers
- BRelief and a sense of accomplished duty after successfully sending the rescue request
- CPanic because the stove fire was going out
- DAnger that the Burlington operator took too long to reply