If Two of a Producer's Goods Are Substitutes in Production,this

Multiple Choice

If two of a producer's goods are substitutes in production,this suggests that the producer (with her fixed set of resources) will need to reduce production of one good when she:

A) produces less of the other good.
B) produces more of the other good.
C) has an increase in resources.
D) produces more of the other good and has an increase in resources.