(01.01 MC)Why is 3 + (−5) equal to −2?

Because it is 5 units to the left of 0 on a horizontal number line
Because it is 5 units to the right of 3 on a horizontal number line
Because it is 5 units to the left of 3 on a horizontal number line
Because it is 5 units to the right of 0 on a horizontal number line