Let $f(x) = \sqrt{ 7 - 2 x }$ .

Which of the following decompositions of $f(x) = p (q(x) )$ into a pair of functions $p(x)$ (the outside function) and $q(x)$ (the inside function) is/are correct ? Select all that apply if more than one is appropriate.

A. $p(x) = \sqrt{- 2 x}$ and $q(x) = 7 + x$
B. $p(x) = 7 - 2 x$ and $q(x) = \sqrt{x}$
C. $p(x) = \sqrt{7 - x}$ and $q(x) = 2 x$
D. $p(x) = \sqrt{-x}$ and $q(x) = 2 x - 7$
E. $p(x) = \sqrt{x}$ and $q(x) = 7 - 2 x$
F. $p(x) = \sqrt{7 + x}$ and $q(x) = 2 x$
G. All of the above
H. None of the above