(A): The area of an equilateral triangle of side 5 cm is $$\frac{25}{4}\sqrt{3} cm^2$$

(R): Sum of the angles in the triangle is 180°

A

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

B

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

C

if (A) is true but (R) is false

D

if (A) is false but (R) is true