Cordell Is Trying to Remember the Various Rocks He Has

Cordell is trying to remember the various rocks he has been studying in his earth science class (granite, sandstone, limestone, obsidian, marble, etc.) .He finally decides it would be easiest if he studied them as three groups: sedimentary, igneous, and metamorphic.Considering research regarding this strategy, Cordell should:

A) have an easier time remembering them because he is organizing them.
B) have a more difficult time remembering them because he must remember the three groupings as well as the rocks themselves.
C) have an easier time remembering them only if he also looks at pictures of each kind of rock.
D) have a more difficult time remembering them because he is only using rehearsal to learn them.