Which equation shows the function [tex]y=2^{x}[/tex] translated 4 units left and 2 units down?
a. [tex]y-2=2^{x-4}[/tex]
b. [tex]y+4=2^{x-2}[/tex]
c. [tex]y-4=2^{x+2}[/tex]
d. [tex]y+2=2^{x+4}[/tex]