Which sentence demonstrates correct comma usage?

a.
The media are often criticized for their work, and in fact, mistakes are made.
b.
The media, are often criticized for their work, and in fact, mistakes, are made.
c.
The media are often criticized for their work and in fact, mistakes are made.
d.
The media are often criticized for their work and in fact mistakes are made.

Please select the best answer from the choices provided

A
B
C
D

The correct sentence that demonstrates correct comma usage is:

c. The media are often criticized for their work and in fact, mistakes are made.