A garrison of 150 men has provisions for 31 days. At the end of 16 days, a reinforcement arrives, and it is now found that the provisions will last only for 5 days more. What is the reinforcement?  Choose the correct choice from the following answers:
A) 150 B) 450 C) 400 D) 600 E) 300
150 ---- 31   150 ---- 15   x -----5   x*5 = 150*15   x = 450   150   -------   300   Answer: 300
<result>E</result>
A garrison of 150 men has provisions for 31 days. At the end of 16 days, a reinforcement arrives, and it is now found that the provisions will last only for 5 days more. What is the reinforcement?