7.7 A trader executes a "bear spread" on the Japanese yen consisting of a long PHLX 103 March put and a short PHLX 101 March put.

If the price of the 103 put is 2.81 (100ths of /), while the price of the 101 put is 1.6 (100ths of /), what is the net cost of the bear spread?

What is the maximum amount the trader can make on the bear spread in the event the yen depreciates against the dollar?

Redo the answers to Parts a and b, assuming the trader executes a "bull spread" consisting of a long PHLX 97 March call priced at 1.96 (100ths of /) and a short PHLX 103 March call priced at 3.91 (100ths of /). What is the trader's maximum profit? Maximum loss?