$F_{pp}.F_{nn}$ and $F_{np}$ are the nuclear forces between proton- proton, neutron-neutron and neutron proton respectively . Then relation between them is

Question

$$\begin {array} {1 1} (1)\;F_{pp}=F_{nn} \neq F_{np} & \quad (2)\;F_{pp} \neq F_{nn} \neq F_{np} \\ (3)\;F_{pp}=F_{nn} \neq F_{np} & \quad (4)\;F_{pp} \neq F_{nn} \neq F_{np} \end {array}$$