Match the function to its domain:
NOTE: Enter the letter for the domain in the answer box. Letters may be used more than once.

 1. $f(x) = \displaystyle \frac{2}{x-3} + \displaystyle \frac{x + 4}{x+2}$
 2. $f(x) = \displaystyle \frac{x - 5}{x+4}$
 3. $f(x) = 4 x^2 - x + 5$
 4. $f(x) = 3 - x$

A. $\{ x | x \mbox{ is a real number and } x \neq -4 \}$
B. $\{ x | x \mbox{ is a real number } \}$
C. $\{ x | x \mbox{ is a real number and } x \neq -2 \mbox{ and } x \neq 3 \}$