A batsman in his 12th innings makes a score of 70 and thereby increases his average by 3 runs. What is his average after the 12th innings if he had never been ‘not out’? Choose the correct choice from the following answers:  A) 42  B) 37  C) 44  D) 45  E) 46

Rationale: "let ‘ x ’ be the average score after 12 th innings ⇒ 12 x = 11 × ( x – 3 ) + 70 ∴ x = 37 answer b"
Answer: B