When flying Hawk N666CB, the proper phraseology for initial contact with McAlester Flight Service is:
a) "Hawk N666CB, this is McAlester Flight Service, over."
b) "McAlester Flight Service, this is Hawk N666CB, requesting clearance."
c) "McAlester Flight Service, Hawk N666CB, requesting permission to enter airspace."
d) "This is Hawk N666CB, contacting McAlester Flight Service."