A compound proposition is satisfiable if there is an assign- ment of truth values to the variables in the compound propo- sition that makes the statement form true. 60. Which of these compound propositions are satisfiable? a) (pvqvar) A (p V V -) A (p V V -s) A (pvmV) (p VIV) b) (pvn Vr)^(pvqV-s) (p V V -s) (pv-rv-) A (pvqv-) A (p Varvas) c) (pvq vr) A (p V V -s) 9V-TVs) ^ (pvrvs)^(pvqV-s) (p V Var) A (pvm Vs)^(pvova)