A Whole Life policy issued to (25) pays a sum insured benefit of $500,000 at the end of the year of death. Premiums are payable annually to age 65 . Calculate: a) the premium b) the benefit reserve at the end of the 10th year At the end of the tenth year, the policyholder has the option to change the policy so as to pay the same premium for a total of 20 years from the outset, in return for adjusting the sum insured to B. c) Calculate B d) If the option in c) is selected, calculate the benefit reserve at the end of the 15th year Assume mortality follows the Tables with interest =6%