Answer:
d. We do not have enough information to answer this question
Explanation:
We could say that maybe if the price lowers by pure law of supply and demand the consumers will consume more cups of coffe but for a more complete answer we need the elasticity of demand of that good (coffe), to be able to know in what quantity a change in the price would affect the demand and to know if the relation between the price and the units buyed are positive or negativa.