A sum becomes Rs. 33800 in 2 years and Rs. 43.940 in 3 years, when lent in a scheme of compound interest (compounding annually). If double the sum is invested in the same scheme for 2 years, then what will be the amount obtained at end of 2 years?

A

Rs. 62480

B

Rs. 67600

C

Rs. 71240

D

Rs. 60,420