Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Theoretically, a planophile canopy would be more efficient if radiation were distributed more evenly over leaf surfaces.
Reason R: Such an equitable distribution could be accomplished by having leaves, at least the upper leaves, at a vertical leaf inclination when the sun is at high elevations.
In light of the above statements, choose the correct answer from the options given below: