Help!! I keep getting this wrong!

'%DFour charges, ., v, g., and g4 are fixed at the corners of a square. A charge g that is free to move located at the exact center of the square | c = Classify the scenarios described according to the force that g q b would be exerted on the center charge q. Assume in each case ) that g is a positive charge. Do not assume that the fixed charges have equal magnitudes unless the scenario defines such an equality. q qc qd Force is zero Force is to the left Force is to the right Force is undetermined Answer Bank g = go = positive and , = gq = negative Ga = gq = positive and g, = g, = positive g = qq = positive and g. = g, = negative ga = gc = positive and g, = gq = positive gs = gc = negative and g, = g4 = positive g = gq = negative and g. = , = negative g = go = negative and g, = gq = negative a = gq = negative and g, = g, = positive