Which shows how to insert parentheses to make the statement true?

12 – 3 × 2 + 6 = 24
A. (12 – 3) × 2 + 6 = 24
B. 12 – (3 × 2) + 6 = 24
C. 12 – 3 × (2 + 6) = 24
D. 12 – (3 × 2 + 6) = 24