It would B, because anytime you search it always pulls up google search engine.
Explanation:
A boot sector is the sector of a persistent data storage device which contains machine code to be loaded into random-access memory and then executed by a computer system's built-in firmware. Usually, the very first sector of the hard disk is the boot sector, regardless of sector size and partitioning flavor.
Answer:
. go to a page you wanna bookmark, and click the little star icon :)
use them correctly and store them in a dry place, tools made of steel can rust in prolonged exposure to a damp or humid environment
