C-09-Q069mediumsingle_mcqIf ax=b, by=ca^x = b,\, b^y = cax=b,by=c and cz=1c^z = 1cz=1 (with a>0, a≠1a > 0,\, a \neq 1a>0,a=1), then xyzxyzxyz equals:a000b111c−1-1−1d