A tree increases annually by 1/8 of it's height. By how much will it increase after 2 years, if it stands today 64 cm high ?

A 72 cm

B 74 cm

C 75 cm

D 81 cm

Correct Answer: Option D

Solution: After first year (64 + 64 \( \times \) 1/8) = 64 + 8 = 72 cm

After first year (72 + 72 \( \times \) 1/8) = 72 + 9 = 81 cm