Which of the following equations could possibly be a formula for the graph?

There may be more than one correct answer. Select all that apply.

A. $y= - \ln{(x)}$
B. $y= \log{(x)}$
C. $y= - \log{(x)}$
D. $y= - e^{-x}$
E. $y = \ln{(x)}$
F. $y= e^{-x}$