W What Does the Following MATLAB Function Do $~~~~~\log 2 ( \mathrm { x } )$

W What does the following MATLAB function do? $~~~~~\log 2 ( \mathrm { x } )$
a. returns the value of base-2 logarithm of $x$ .
b. returns the value of base-10 logarithm of 2 and assigns it to $x$ .
c. returns the value of common $\log$ of $2 x$ .
d. returns the value of natural logarithm of 2 and assigns it to $x$ .