Two Nuclei Collide,one Originally at Rest,in an Endothermic Nuclear Reaction

Multiple Choice

Two nuclei collide,one originally at rest,in an endothermic nuclear reaction with Q = −2.05 MeV.Which of the following describes the minimum kinetic energy needed in the reactant nuclei for the reaction is to occur?

A) equal to 2.05 MeV
B) greater than 2.05 MeV
C) less than 2.05 MeV
D) exactly half of 2.05 MeV