As used in section six (C), compensation of officers and employees within this State shall include the entire amount of wages, salaries and other personal service compensation for services performed within or both within and without this State if:
(a) The service is performed entirely within this State; or
(b) The service is performed both within and without this State, but the service performed without this State is incidental to the individual's service within the State, for example, is temporary or transitory in nature or consists of isolated transactions;
(c) The service is not performed entirely in any State but some of the service is performed in this State, and (1) the base of operation, or, if there is no base of operations, then the place from which such service is directed or controlled, is in this State; or (2) the base of operations or place from which such service is directed or controlled is not in any State in which some part of the service is performed, but the individual's residence is in this State;
(d) Contributions are not required and paid with respect to such services under an unemployment compensation law of any other State.