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when there is no air resistance, objects of different masses dropped from rest

a. fall with equal accelerations and with equal displacements.

b. fall with different accelerations and with different displacements.

c. fall with equal accelerations and with different displacements.

When there is no air resistance, objects of different masses dropped from rest  fall with equal accelerations and with equal displacements. (A)

(If they're dropped from rest, then they all have the same initial velocity and the same acceleration. So whenever you take a picture of the falling objects, they'll always be grouped together as they fall, and their displacements will all be the same. Hard to believe, but without air resistance, this is true even if the objects are a feather, a rock, and a school bus.)

what type of charge does it have? negative