$\displaystyle\lim_{x \to 0} \begin{pmatrix}\frac{x. 10^x - x}{1-\cos x}\end{pmatrix}$ is equal to :

Question

( A ) $4 \log 10$
( B ) $\log 10$
( C ) $2 \log 10$
( D ) $3 \log 10$