For the given grammar, is it possible to derive the sentence a=b+ const; b=a+a;c= const b;d=a+c ? Grammar: True False For the given grammar, is it possible to derive the sentence a=b+ const; b= const a+ const ? Grammar: program::=stmtsstmts:=stmtstmt;stmtsstmt::=var=exprvar::=abcd<: true false>