A child pulls on a large box with a force of $15$ N$.$ The box has a mass of $7\mathrm{.}5-$kg and the

coe$$cient of friction between the $$oor and the box and is $0\mathrm{.}4.$ The frictional

component of the force the $$oor exerts on the box is

a$.$ Exactly $3\mathrm{.}0$ N

b$.$ Between $3\mathrm{.}0$ N and $15$ N

c$.$ Exactly $15$ N

d$.$ Between $15$ N and $30.$ N

e$.$ Exactly $30.$ N