At what rate percent on simple interest will Rs.1750 amount to Rs.2000 in 4 years? Choose the correct choice from the following answers:
A) 4 %
B) 3.57 %
C) 2 6 / 7 %
D) 5 %
E) 6 %

Rationale: "explanation : 250 = ( 1750 x 4 xr ) / 100 r = 3.57 % answer : option b"
Answer: B