Which one of these statements regarding the phases of development is true?

• The pre-production phase starts after the prototype phase.
  
  
• The beta phase starts after the alpha phase.
  
  
• The alpha phase starts after the gold phase.
  
  
• The concept phase starts after the pre-production phase.
  
  
• The production phase starts after the beta phase.

Casu Marzu cheese

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Look that one up, I dare you.

This is homework, what do you think is the answer and how do you arrive at it. Site rules.

No "all of the above"?

I pick number 10. :)