Leather Belts and Leather Shoes Are Substitutes in Production

Leather belts and leather shoes are substitutes in production. If style changes increase the demand for leather belts, the supply curve of leather shoes will shift

A) rightward and the equilibrium price of leather shoes will rise.
B) rightward and the equilibrium price of leather shoes will fall.
C) leftward and the equilibrium price of leather shoes will rise.
D) leftward and the equilibrium price of leather shoes will fall.