A student chose a number, multiplied it by 2, then subtracted 138 from the result and got 104. What was the number he chose?  Choose the correct choice from the following answers: A) 123 B) 121 C) 277 D) 267 E) 120

Rationale: "let xx be the number he chose , then 2 â ‹ … x â ˆ ’ 138 = 104 2 â ‹ … x â ˆ ’ 138 = 104 x = 121 answer : b"
Answer: B