Which option is correct for the portal frame in equilibrium as shown in figure below :
1
\(\left( {\frac{{{{\rm{M}}_{{\rm{BC}}}}\, + \,{{\rm{M}}_{{\rm{CB}}}}}}{4}} \right)\) + P = 0
2
\(\left( {\frac{{{{\rm{M}}_{{\rm{BA}}}}\, + \,{{\rm{M}}_{{\rm{AB}}}}}}{4}} \right)\) + P = 0
3
\(\left( {\frac{{{{\rm{M}}_{{\rm{BA}}}}\, + \,{{\rm{M}}_{{\rm{AB}}}}}}{4}} \right)\, + \,\left( {\frac{{{{\rm{M}}_{{\rm{CD}}}}\, + \,{{\rm{M}}_{{\rm{DC}}}}}}{4}} \right)\) + P = 0
4
\(\left( {\frac{{{{\rm{M}}_{{\rm{CD}}}}}}{4}} \right)\)+ P = 0