Physics please help

Listen A hand exerts a horizontal applied force on a block of mass m, pushing it against the wall and just keeping the block at rest. Some of the forces acting on the block are described in the following equalities. (u represents the coefficient of static friction for the surfaces) 1: FNORMAL = FAPPLIED 11: HF APPLIED = FNORMAL Ill: mg = JF APPLIED IV: FNORMAL = mg Which of the equalities are true? 1. 1 & IV 2 1 & III 3. III & IV 4 II & IV 5 II, III & IV