An Increase in the Price and an Ambiguous Change in Quantity

An increase in the price and an ambiguous change in quantity is MOST likely caused by:

A) a shift to the left in demand and no shift in supply.
B) a shift to the left in supply and no shift in demand.
C) a shift to the right in supply and a shift to the left in demand.
D) a shift to the left in supply and a shift to the right in demand.