Which of the Following Relationships Involves Asymmetric Information

Which of the following relationships involves asymmetric information?

A) Patients can look up information regarding certain prescription drugs giving them the same information as their doctors.
B) Consumer Reports allows customers of DVD players to know as much about the quality of various players as the store salesperson.
C) Car Fax allows car buyers to obtain used-vehicle histories providing them with the same information as the dealership salesperson.
D) The goalkeeper in a football game must guess whether the penalty taker will shot to the goalkeeper's right or left side.