Could you check this dialog? I am not sure about the use of the article 'a'.<br/><br/>A: What size is it?<br/>B: It's <span style="color:rgb(0,0,255);"><i><b>a</b> </i></span><b><span style="color:rgb(0,0,255);"><i>32</i></span>.</b><br/>A: Oh...I'm <b><span style="color:rgb(0,0,255);"><i>a 30</i></span>.</b>