Underline tag error

HI

I have used tag to underline PH.D. Students. Still says erros.
he

u

tag should wrap around the text

Ph.D. students

. // tests completed

Plz help with this.

<p>Google was founded by Larry Page and Sergey Brin while they were

         <u>Ph.D.students</u>

        at <strong>Stanford University</strong>.</p>

you need to add the tags without changingn anything else

Did it!! worked! thanks Ieahleen