A bank offers 5% inerest compounded half yearly. A customer deposits Tk. 1600 each on 1 st January and 1st July of a year. At the end of the year, the amount he would have gained by the way of interest is
A
Tk. 121
B
Tk. 122
C
Tk. 123
D
Tk. 124
Correct Answer: Tk. 121