The average runs of a cricket player of 15 innings was 25. How many runs must he make in his next innings so as to increase his average of runs by 6?	Choose the correct choice from the following answers:
A) 121	B) 421	C) 143	D) 176	E) 84

Rationale: "explanation : average after 16 innings = 31 required number of runs = ( 31 * 16 ) – ( 25 * 15 ) = 496 – 375 = 121 answer a"
Answer: A