Richard's Rollerskate Company Relies on Simon's Trucking to Transport All

Richard's Rollerskate Company relies on Simon's Trucking to transport all of their products. Simon's Trucking is the only shipping company for RRC, and all products are shipped in trucks that look like giant roller skates with Richard's Rollerskate branding on the trucks. Richard's Rollerskate is likely using which carrier type?

A) Common carrier.
B) Contract carrier.
C) Private carrier.
D) None of these.