Determine the correctness or otherwise of the following statements, [a] and [r]: [a] A closed-section box beam configuration is used in aircraft wings. [r] Closed-section box beam configuration is capable of resisting torsional loads.

• 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 true but [r] is false.