title: Where to put methods that interact with multiple classes
body: <p>I have a class called <code>Contact</code> and one called <code>Account</code></p>
  
  <p>and I have a method called <code>public static Account GetAccount(Contact c) {...}</code></p>
  
  <p>Where is the best place to put this method?  What design patterns should I be looking at?</p>
  
  <p>A) With the Contact class</p>
  
  <p>B) With the Account class</p>
  
  <p>C) Have the method accessible in both classes</p>
  
  <p>D) Somewhere else?</p>