A person has left a sum of Rs.1,45,600 to be divided among is two sons aged 15 years and 13 years now. Both of them insvested their shares on simple interest at 10% per annum. If both of them gets equal gets amounts when they attains 18 years of age, then the original share received by younger son is:

A

₹64,500

B

₹67,600

C

₹66,400

D

₹67,500