what is rate of interest if principal.amount be 400,simple interest 140 and time 2year.	Choose the correct choice.
A) 10
B) 17.5
C) 25
D) 12
E) 14.5

Rationale: "s . i = ( p * r * t ) / 100 140 = 800 r / 100 r = 140 / 8 = 17.5 % answer b"
Answer: B