In the Shepard and Metzler's Task,subjects Are Asked To

In the Shepard and Metzler's task,subjects are asked to:

A) mentally rotate the hands on a clock to the same degree of angle as a standard clock.
B) mentally compare the size of a rabbit to a fly.
C) mentally rotate two-dimensional test cubes to decide if they were the same as original cubes.
D) rehearse and then imagine they were reciting a verbal jingle.