067A B
 Which statement concerning Inmarsat-B and Inmarsat-C terminals is correct?
a) Both Inmarsat-B and Inmarsat-C units are capable of fax and voice communications. 
b) Both Inmarsat-B and Inmarsat-C units can send data as well as send messages to fax machines.
c) Inmarsat-B units are not capable of data communications, but Inmarsat-C units are capable of data communications.
d) None of the above
