If 1.5 ≤ x ≤ 4.5, then which one of the following is correct?

• A. (2x - 3)(2x - 9) > 0
• B. (2x - 3)(2x - 9) < 0
• C. (2x - 3)(2x - 9) ≥ 0
• D. (2x - 3)(2x - 9) ≤ 0