I have $15$ muffins, $x$ of them are red$-$velvet flavored, $5$ of them are chocolate flavored and the rest are vanilla flavored. An expression in terms of $x$ for the number of vanilla flavored muffins I have is

A$.15-x+5$

B$.10-(x-5)$

C$.10-x$

D$.10-(-x-5)$