(A) : Horizontal range is same for angle of projection $\mathrm{\theta }$ and (90^o - $\mathrm{\theta }$) for same speed of projection.
(R) : Horizontal range is independent of angle of projection.

(A) is true but (R) is false

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are false

Both (A) and (R) are true and (R) is not the correct explanation of (A)