If (2x + 3y + 4)(2x + 3y – 5) is equal to (ax2 + by2 + 2hxy + 2gx + 2fy + c), then what is the value of {3(g – f – c)/ab} ?

• A. \(\dfrac{41}{24}\)
• B. 1
• C. \(\dfrac{31}{24}\)
• D. \(\dfrac{25}{24}\)