The difference between simple interest and C.I. at the same rate for Rs.5000 for 2 years in Rs.72. The rate of interest is?	Choose the correct choice from the following answers:
A) 12 B) 17 C) 18 D) 16 E) 11
5000 = 72(100/R)2   5 R2 = 720 =&gt; R = 12   Answer: 17
<result>B</result>
The difference between simple interest and C.I. at the same rate for Rs.5000 for 2 years in Rs.72. The rate of interest is?