Evaluate the integral: ∫ (12)/(x^2√(x^2+49)) dx
What is the value of the integral ∫ (12)/(x^2√(x^2+49)) dx?

A) 2√(x^2+49) +
C
B) 6√(x^2+49) +
C
C) 12√(x^2+49) +
C
D) 24√(x^2+49) + C