The NLRB has ruled in a case in which an employee was discharged after being ousted from the union where membership was a condition of employment that

a. such conditions are illegal under Taft-Hartley.
b. expulsion from a union for any reason other than nonpayment of dues and initiation fees cannot result in loss of employment.
c. expulsion from a union for any reason can legally result in loss of employment.
d. the issue was nonarbitrable and relief would have to be sought through the courts.

B