The transition of altitude to flight level and vice versa is made:
a. On the transition level in the climb and transition altitude in the descent
b. At the transition altitude in the climb and transition level in the descent
c. At the transition level only
d. At the transition altitude only
a. On the transition level in the climb and transition altitude in the descent
b. At the transition altitude in the climb and transition level in the descent
c. At the transition level only
d. At the transition altitude only