Answer:
B.
Step-by-step explanation:
The given expression is

Then, we can factorize the denominators are
4x² + 5x + 1 = (4x + 1)(x + 1)
x² - 4 = (x + 2)(x - 2)
So, the expression is equal to

Then, multiply the expression and simplify

Therefore, the answer is B.