Please explain how the exercise/strike price is determined.

In the 1980s, Bankers Trust developed inder currency option notes (ICONs). These are bonds in which the amount received by the holder at maturity varies with a foreig?n exchange rate. One example was its trade with the Long Term Credit Bank of Japan. The ICON specified that if the yen-U.S. dollar exchange rate, Sr, is greater than 169 yen per dollar at maturity (in 1995), the holder of the bond receives S1,000. If it is less than 169 yen per dollar, the amount received by the holder of the bond is 169 1,000 -max 0,1,000 When the exchange rate is below 84.5, nothing is received by the holder at maturity. Show that this ICON is is a combination of a regular bond and two options