A $$3$$-digit integer is called a \textquotesingle V-number\textquotesingle{} if the digits go \textquotesingle high-low-high\textquotesingle{} $$-$$ that is, if the tens digit is smaller than both the hundreds digit and the units (or \textquotesingle ones\textquotesingle) digit.  How many $$3$$-digit \textquotesingle V-numbers\textquotesingle{} are there? 
选项为:A:$$120$$  B:$$240$$  C:$$285$$  D:$$320$$  E:$$400$$  请回答其中一个选项.