PLS HELP! Will give brainliest! Which numbers are five units from zero on a number line? Select all that apply. (can be more than one answer) A. 5

B. 1/5

C. 10

D. -5

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?