Tick the correct answer and justify:

Inand the angle B is:

A. 120° B. 60°

C. 90° D. 45°

Given that, AB = 6 cm,

AC = 12 cm,

And BC = 6 cm

It can be observed that

AB² = 108

AC² = 144

And, BC² = 36

AB² +BC² = AC²

ΔABC, is satisfying Pythagoras theorem.

Therefore, the triangle is a right triangle, right-angled at B

∠B = 90°

Hence, the correct answer is (C)