According to 14 CFR § 91.159, when operating an airplane under VFR in level cruising flight above 3,000 feet AGL up to 18,000 feet MSL on a magnetic course of 000° to 179°, what altitude must be maintained?
- AAny odd-thousand-foot MSL altitude plus 500 feet (e.g., 3,500, 5,500, 7,500)
- BAny even-thousand-foot MSL altitude plus 500 feet (e.g., 4,500, 6,500, 8,500)
- CAny odd-thousand-foot MSL altitude (e.g., 3,000, 5,000, 7,000)
- DAny even-thousand-foot MSL altitude (e.g., 4,000, 6,000, 8,000)