=+Calculate the weighted average cost of capital (WACC) for Green ple on the assumptions that the share price calculated in question c is the market share price and the entry 'Creditors (amounts falling due after more than one year)' consists entirely of a debenture issued at a total par value of £100m five years ago and this is the only liability relevant to the WACC calculation. The debenture will pay a coupon of 8 per cent in one year, followed by a similar coupon in two years from now. A final coupon will be paid in three years upon redemption of the debenture at par value. The debenture is currently trading in the secondary market at £103 per £100 nominal.