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 one.
A) 10%  B) 12%  C) 6%  D) 8%  E) 4%
5000 = 72(100/R)2   5 R2 = 720 =&gt; R = 12   Answer: Option 12%
<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?