Inancial Fraud Case Pits Arbitration Versus Class Action

Please answer the following four questions related to the document provided:
WHAT SHOULD THE JUDGE DO?
1. Let the arbitration proceed. Mr. Groetsch has his right to be compensated for his losses. If nothing is left for the others, then that is unfortunate but irrelevant. Explain your reasoning.
2. Delay the arbitration and wait for the outcome of the class action suits. Once settled, then allow the arbitration to proceed to its end. Explain your reasoning.
3. Suggest to, although you cannot force, Mr. Groetsch to drop his arbitration and fold him into one of the class action suits (if possible). Explain your reasoning.
4. Create and explain other alternatives.