If the simple interest on a certain amount in at 4% rate 5 years amounted to Rs.2080 less than the principal. What was the principal? Options:
A) 1500
B) 2600
C) 2507
D) 3200
E) 11500

Rationale: "p - 2080 = ( p * 5 * 4 ) / 100 p = 2600 answer : b"
Answer: B