E2C11 — Amateur Extra Class

E2C11 : How should you generally identify your station when attempting to contact a DX station during a contest or in a pileup?
A Send your full call sign once or twice
B Send only the last two letters of your call sign until you make contact
C Send your full call sign and grid square
D Send the call sign of the DX station three times, the words this is, then your call sign three times
Correct Answer: Send your full call sign once or twice