Given two relational schemas R(ABC) and S(ABC), let r(R) and 5(S) be the relations (relation table or relation instance) corresponding to R and S respectively as the following: R A B C 21 C1 bi b3 03 C3 S A B C ai C1 61 b2 a2 C2 Please indicate if the following expression is True or False. OR.C=s.c(R x S) R RC=SC S