title: Conditional simple drop down list?
body: <p>I'm trying to program a website using HTML and I have a question. I'm using a drop-down list with options A and B, but after one of this is chosen, I'd like to create another drop down list and text fields at the same page, with different questions. For example, If some one choose A, then it'll be asked questions C and D, and if someone chose B, it'll be asked questions E and F. What is the best way to program this ?</p>
  
  <p>Sorry for any mistake in English, I'm not a native speaker.
  And Thanks in advance.</p>