In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".

[header] How to revive a cell phone battery [title] First, gather your supplies. [step] You'll need the following : [substeps] 9-volt battery-any brand will do. Electric tape-you'll need no more than five inches. <sep> (A) One piece of tape will be enough to run a battery. ( the full number of inches is difficult to determine. (B) Electrical wire-basic thin electrical wire will do. Red (+) and black (-) are preferred. (C) Sturdy cardboard, which you can cut into squares. A magnetized or metal battery with a 1 inch sticker at the bottom. (D) A stainless steel microwave-11 volt at minimum. 2 wire meters-pick at least 4-feet of 4-foot (1.4 m) long wire.
B