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Algebra Difficulty 1.0 Junior Find the answer United Kingdom

Brian chooses an integer, multiplies it by 4 then subtracts 30. He then multiplies his answer by 2 and finally subtracts 10. His answer is a two-digit number. What is the largest integer he could choose?

(A) $10$ (B) $15$ (C) $18$ (D) $20$ (E) $21$

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