067C C
 Which statement concerning Inmarsat-B and Inmarsat-C terminals is correct?
a) Inmarsat-B terminals require gyro and GPS input, in order to enable automatic satellite tracking. 
b) Inmarsat-C terminals require only GPS input, in order to enable automatic satellite tracking.
c) Inmarsat-B terminals require AZ/EL setup and gyro input, in order to enable automatic satellite tracking.
d) Inmarsat-C terminals require AZ/EL setup and GPS input, in order to enable automatic satellite tracking.
