MN is translated up 2 units to form M'N' Which statement is true?

a. M’N’ crosses the x-axis at the same location that MN crosses the x-axis

b. the angle that M’N’ makes with the x-axis is less than the angle MN makes with the x-axis

c. the length of M’N’ is greater than the length of MN

d. the slope of M’N’ is the same as the slope of MN