A. Typical aircraft will have lighter colors at lower surface.R. The background lookup angle is sky.

• A. Both [A] and [R] are true and [R] is the correct reason for [A]
• B. Both [A] and [R] are true but [R] is not the correct reason for [A]
• C. Both [A] and [R] are false
• D. [A] is false but [R] is true