The probability that a man will be alive for 10more yrs is 1/2 & the probability that his wife will alive for 10 more yrs is 1/3. The probability that none of them will be alive for 10 more yrs, is  Choose the correct answer.
A) 1 / 2 B) 1 C) 1 / 3 D) 3 / 4 E) 2

Rationale: "sol . required probability = pg . ) x p ( b ) = ( 1 — d x ( 1 — i ) = : x 1 = 1 / 3 ans . ( c )"
Answer: C