1

Which statement best captures the central idea of this article?

O A. Cell phone users are demanding more efficient batteries.

eavy-duty

h batteries

m of

attery's

O B. Although sulfur is a common element, it is very difficult to

use.

O C. New research in developing sulfur-based batteries has

promising results.

explode.

O D. The search for better batteries involves making them

smaller, safer, and longer- ting

ay

neray in a