Consider two propositional formulas F$1,$ F$2$ and suppose that there is some interpretation I such that I $|=$F$1$ and I $|=$F$2.$ Check all that apply

F$1$ AND F$2$ must be satisfiable

F$1$ AND F$2$ must be contingent

F$1->$ F$2$ must be satisfiable

F$1->$ F$2$ must be satisfiable