(A) : It is hotter over the top of a fire than at the same distance on the sides.
( R) : Air surrounding the fire conducts more heat upwards.

Options

A. Both (A) and (R) are true and (R) is the correct explanation of (A)
B. Both (A) and (R) are true and (R) is not the correct explanation of (A)
C. (A) is true but (R) is false
D. Both (A) and (R) are false

Answer

C