AMC 10A 2018 Problem 10

Suppose that real number x satisfies

\sqrt{49-x^{2}}-\sqrt{25-x^{2}}=3

What is the value of \sqrt{49-x^{2}}+\sqrt{25-x^{2}} ?

Answer Choices
A. 8
B. \sqrt{33}+3
C. 9
D. 2 \sqrt{10}+4
E. 12