A person lent a certain sum of money at 4% per annum at simple interest and in 8 years the interest amounted to Rs.170 less than the sum lent. What was the sum lent?
Choose the correct answer:  A) 228  B) 278  C) 250  D) 500  E) 821

Rationale: "p - 170 = ( p * 4 * 8 ) / 100 p = 250 answer : c"
Answer: C