A bank offers its clients a one-year investment, and if the FTSE rises by 5% or more, it pays the return of the FTSE100 index, but their total return is capped at 15%. If FTSE100 falls or rises by less than 5%, customers will fully recover their initial investment.

a)Please structure an investment product as mentioned above (for example, a combination of two options or a combination of underlying assets and options or other method)?

b)Why might it be difficult to issue such a product in todays market environment?