An Object Moving on the X Axis with a Constant

Multiple Choice

An object moving on the x axis with a constant acceleration increases its x coordinate by 80 m in a time of 5.0 s and has a velocity of +20 m/s at the end of this time.Determine the acceleration of the object during this motion.

A) -1.6 m/s²
B) +6.4 m/s²
C) +1.6 m/s²
D) -2.0 m/s²
E) -6.4 m/s²