In the figure below, the angles \(A, B, C\) of the triangle are in the ratio \(5:12:13.\) What is the measure of angle

[Gmat_mission]

In the figure below, the angles \(A, B, C\) of the triangle are in the ratio \(5:12:13.\) What is the measure of angle \(A?\)

(A) 15
(B) 27
(C) 30
(D) 34
(E) 40

Answer: C

Source: Princeton Review