1000 men have provisions for 15 days. If 300 more men join them, for how many days will the provisions last now?  Choose the correct choice from the following:
A) 11.5	B) 12.5	C) 12.6	D) 12.2	E) 12.1

Rationale: "1000 * 15 = 1300 * x x = 11.5 answer : a"
Answer: A