The Kingdom of Papou Issues a Very-Bull Bond with a Coupon

Essay

The Kingdom of Papou issues a very-bull bond with a coupon equal to:
14.6 - 2 * LIBOR.
Of course, the coupon cannot be negative.
The Kingdom could have issued a FRN at LIBOR + ¼ %, or a straight bond at 5.30%.
The current market conditions for swaps are 5% against LIBOR.
You could also trade in caps and floors with different exercise prices (these are levels of interest rates). The premium are paid annually.
$$\begin{array} { c c c } \text { Exercise } & { \text { Annual Premium } } \\ \text { Intarast Rate } & \text { Cap } & \text { Fladr } \\\hline 7.3 \% & 0.2 \% & 2 \% \\14.6 \% & 0.1 \% & 10 \%\end{array}$$ a. You are a buyer of this very-bull bond. Tell us what it is equivalent to, in terms of buying/selling: FRN, straight bonds, caps or floors.
b. Assume that the Kingdom actually wanted to issue a straight bond (fixed coupon). The bank will put in place a "de-mining" portfolio with swaps and options so that this very-bull bond plus the "de-mining" portfolio is equivalent to a straight bond. What is exactly the "de-mining" portfolio? (Be very precise and tell us if the Kingdom must pay fixed, receive LIBOR or vice versa, etc.)
c. What is the cost advantage for the Kingdom compared to issuing bonds at 5.30%?
d. Same question assuming that the Kingdom wanted to issue an FRN at LIBOR +¼%?