Q. A man invested Rs. 5000 at some rate of simple interest and Rs. 4000 at 1 percent higher rate of interest. If the interest in both the cases after 4 years is same, the rate of interest in the former case is

• (A) 4% p.a.
• (B) 5% p.a.
• (C) 6.25% p.a.
• (D) 25/3% p.a.