The correct option is (B),

Given $10$ million which is the same as $1$ crore in the Indian number system i.e.

$1,00,00,000$ there are $7$ zeros in $1$ crore.
Given $10$ lakhs i.e.
$10,00,000$ there are $6$ zeros in $10$ lakhs.

We have to subtract the two values

$$\begin{gathered} =1,00,00,000-10,00,000 \\ =90,00,000 \end{gathered}$$

i.e. $90$ lakhs in the Indian number system.
Therefore, there are $6$ zeros in the remainder.