How to break up ice on a driveway<br>Choose a deicing product carefully. Not all deicing products are the same, so read the labels and choose the one that is best for your deicing needs. Rock salt (sodium chloride) is the most common deicing product, but keep in mind that this product may contain cyanide in it as well.

Can we draw the following conclusion?
Rock salt is rarely used because it contains cyanide.

Select from: A). Yes; B). It's impossible to say; C). No;
C).