4. (CAS 2004 Nov #5) For a special decreasing 15-year life insurance on a person age 30, are given: (i) Mortality follows De Moivre's law with @= 100. (ii) The net payment is 2,000 for the first 10 years and 1,000 for the last 5 years. (iii) The death benefit is payable at the end of the year of death. (iv) v=0.95 Calculate the level annual premium for this insurance. (A) 14.90 (B) 18.60 (C) 19.58 (D) 25.96 (E) 27.33 you