The Elasticity of Demand for Labor in the Electric-Vehicle Battery

The elasticity of demand for labor in the electric-vehicle battery market will likely rise if

A) the elasticity of demand for electric-vehicle batteries falls.
B) labor's share of total production costs of electric-vehicle batteries is small.
C) labor is the only variable factor of production due to time constraints.
D) robots can easily be substituted in place of labor in electric-vehicle battery production.