How to highlight/mark a domain name which appear in an email address list?
<p>In Google Spreadsheets I have: </p>

<p>Column A - contain naked domain list(apples.com, banana.com, oranges.com)</p>

<p>Column C - potentially contains email address with those naked domains( jack@banana.com, mike@pineapple.com, michelle@banana.com)</p>

<p>Column C definitely contains column A domains, but not vice versa. </p>

<p>How do I highlight/marl all the email address which contain a naked domain from column A? </p>

<p>And then afterwards get rid of the non-highlighted/marked email addresses? 
Or any pointers where I can find an answer? </p>