A football player catches a football on an icy (perfectly fr…

A football player catches a football on an icy (perfectly frictionless) horizontal surface. The football moves with a velocity with a positive x-component and a negative y-component before being caught. Take x to be horizontal and positive y to be upward vertical. Which answer correctly describes the changes in the y-component of the total momentum (for the player/football system) when the football is caught?