An Object Moves 20 M East in 30 S and Then

Multiple Choice

An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50 s. If west is chosen as the positive direction, what is the sign associated with the average velocity of the object?

A) "+"
B) "-"
C) "0 (no sign) "
D) "any of the above"