gaokao 2017 Q5

gaokao · China · national-II-arts Inequalities Solve Polynomial/Rational Inequality for Solution Set
If $a > 1$, then the range of values of $x$ satisfying $\log_a(x^2 - 2) < \log_a x$ is
A. $(\sqrt{2}, +\infty)$
B. $(\sqrt{2}, 2)$
C. $(1, \sqrt{2})$
D. $(1, 2)$
If $a > 1$, then the range of values of $x$ satisfying $\log_a(x^2 - 2) < \log_a x$ is

A. $(\sqrt{2}, +\infty)$

B. $(\sqrt{2}, 2)$

C. $(1, \sqrt{2})$

D. $(1, 2)$