Which of the following best describes the ease of resource substitutability as a determinant of the elasticity of resource demand?
a) The greater the substitutability of other resources, the less elastic is the demand for a particular resource
b) The greater the substitutability of other resources, the more elastic is the demand for labor
c) The greater the substitutability of other resources, the more elastic is the supply of labor
d) The lesser the substitutability of other resources, the more elastic is the demand for labor