More Cattle Are Found to Have Mad Cow Disease

More cattle are found to have mad cow disease. As a result, consumer confidence in the safety of beef is shaken. What would an economist predict will happen in the beef market?

A) As consumer preferences move away from beef, there is an upward movement along the beef demand curve.
B) The demand curve will shift to the left.
C) The demand curve does not shift but consumers move to a point lower down the curve.
D) absolutely no change in either the quantity demand or the demand for beef