Although Mnemonics Can Be Helpful for Remembering a Small Number

Although mnemonics can be helpful for remembering a small number of specific items (like a grocery list) , they do have some drawbacks. One such problem is that

A) using a mnemonic involves a trade-off of attention so that less attention is available for making the many memory connections that can help one understand the material.
B) mnemonics only work when remembering up to seven items.
C) mnemonics are particularly difficult to remember when specific information is being tested.
D) the recall of all items by mnemonics is slow.