A student,after his teacher's question, chose a number, multiplied it by 2, then subtracted 138 from the result and got 102. What was the number he chose?  Choose the correct choice from the following answers:
A) 344 B) 251 C) 411 D) 212 E) 120
Let x be the number he chose, then   2⋅x−138=102   2x=240   x=120   correct answer is 120)120
<result>E</result>
A student,after his teacher's question, chose a number, multiplied it by 2, then subtracted 138 from the result and got 102. What was the number he chose?