[QUE/ME-08005] ME-PROBLEM

A cart carries an air baloons suspended from ceiling and a He filled balloon tied to the floor. The figure shows the situation when the cart is moving with uniform velocity. How will the two baloons appear when the cart has an non zero acceleration in the forward direction indicated in the figure by an arrow?
Which of the following figures, (a),..,(d), depicts the correct situation when the cart accelerates as above.