Simplify by completely dividing the following expression. (a⁴ + 13a² + 5a + 12)/(a² + 6)

• A. a² + 7 + (5a - 30)/(a² + 6)
• B. a² - 7 - (5a - 30)/(a² + 6)
• C. a² + 7 + (7a - 42)/(a² + 6)
• D. a² - 7 + (7a + 42)/(a² + 6)

Answer: (A)