While Carla Is Out with Friends One Night,she Is Hit

While Carla is out with friends one night,she is hit by a speeding car.Carla remains in a coma for 3 weeks.When she finally wakes up,she has trouble not only remembering what she was doing the night of the accident but also the names of her family and friends,her address,and where she goes to school.She can,however,form new memories.Carla is suffering from:

A) short-term memory loss.
B) anterograde amnesia.
C) retrograde amnesia.
D) iconic memory loss.