Ravi and Kavi start a business by investing â‚¹ 2000 and â‚¹ 72000, respectively. Find the ratio of their profits at the end of year.	Choose the correct answer:
A) 2 : 36	B) 5 : 36	C) 7 : 36	D) 1 : 36	E) 3 : 36

Rationale: "ratio of profit = ratio of investments = 2000 : 72000 = 1 : 36 answer : d"
Answer: D