If the Goal of the Union Is to Maximize Member

If the goal of the union is to maximize member income, then

A) a wage rate will be set in the inelastic portion of the demand curve.
B) a wage rate will be set at the point at which the elasticity of demand equals 1 and marginal revenue is positive.
C) a wage rate will be set at the point at which marginal revenue equal zero.
D) the supply of labor must be inelastic.