title: Why is my Python code doing a sys.exit after I choose my option
body: <p>The Code.
   if I enter <code>a/b/c/q</code> it defaults to <code>sys.exit</code></p>
  
  <p>I've got literally no idea why it does this, so any suggestions are really welcome.</p>
  
  <pre><code>import sys
  print('             Option A             ')
  print('             Option B             ')
  print('             Option C             ')
  answer = input(' ').lower
  
  if answer == 'a':
  
  #code is here
  sys.exit
  
  if answer == 'b':
  
  #more code is here
  sys.exit
  
  elif answer == 'c':
  
  #more code here
  sys.exit
  
  
  elif answer == 'q':
  print ("exit program')
  sys.exit
  </code></pre>
  
  <p>Any help would be amazing! (I'm fairly new to python, version 3.5.1)</p>