15. hello can some help

A charged sphere, located in the space between two flat parallel plates connected to a battery, experiences an electrical force of 3.32 x 10-3 N. 15. The plates are kept at the original separation. If the charge on the sphere is reduced to exactly one half and the potential difference between the plates is exactly tripled, then the new force on the charged sphere will be () 2.21 x 10 N () 1.99 x 10 N ()6.64 x 103N ()4.98 x 103N