According to the Big Bang Theory,how Many Forces-And Which Ones-Operated

Multiple Choice

According to the Big Bang theory,how many forces-and which ones-operated in the universe during the GUT era?

A) 1 force that represented the unification of all four forces that operate today
B) 3 forces: gravity,the strong force,and the electroweak force
C) 2 forces: the strong force and the electroweak force
D) 2 forces: gravity and a single force that later became the strong,weak,and electromagnetic forces