What is the difference between the commands test -e path and test -f path?

What is the difference between the commands test -e path and test -f path?
A . They are equivalent options with the same behaviour.
B . The -f option tests for a regular file. The -e option tests for an empty file.
C . Both options check the existence of the path. The -f option also confirms that it is a regular file.
D . The -f option tests for a regular file. The -e option tests for an executable file.

Answer: C