The number of real values of x satisfying the equality (\log_2x)(\log_bx) \equal{} \log_ab, where a>0, b>0, a=1, b=1, is:
<spanclass=′latex−bold′>(A)</span>0<spanclass=′latex−bold′>(B)</span>1<spanclass=′latex−bold′>(C)</span>2<spanclass=′latex−bold′>(D)</span>a finite integer greater than 2<spanclass=′latex−bold′>(E)</span>not finite