Please review this article that can be found here.

http://www.smh.com.au/business/big-four-dilemma-looms-but-failure-is-not-an-option-20140418-36wnh.html.

Explain:

a)Why are the big 4 Australian banks considered by many as "too big to fail"?

b)What are the concerns outlined by the commentators regarding the big 4 banks being regarded as being "too big to fail"?

c)What are the actions proposed in the article to address this?

d)How have the big 4 banks reacted to this idea?