If 1, $\log_3 \sqrt{(3^{1-x} +2)}, \; \log_3 (4.3^x -1)$ are in AP, then $x$ equals :

Question

( A ) $\log_3 4$
( B ) $1-\log_4 3$
( C ) $1-\log_3 4$
( D ) $\log_4 3$