Select the situation that can be represented with an integer that when combined with - 4 make O?

A) you walk down 4 flights of stairs.

B) You climb up 4 flights of stairs.

C) The temperature drops 4 degrees.

D) You spend $4 on a book

step-by-step explanation:

throw the computer

step-by-step explanation:

if she was to only spend a dollar she can get 1lb

step-by-step explanation:

the battle of gettysburg is considered the "high water mark" of the confederacy because it marked the greatest advance of the confederate forces against the union.