Two boys wearing in line skates are standing on a smooth surface with thefans of their hands touching and their arms bent above if boy x forces by straightening his arms out one boy why holds his arms in the original position what is the motion of the two boys?
a. Boy X does not move and Boy Y moves back ward

b. Boy Y does not move and boy x moves backward

c. boy X and Y boat moves backward the motion depends on how hard boy pushes​