Let the probability function on set S, where$ S = [a^1, a^2, a^3, a^4]$ Find $P(a_1)$ if $P(a_2) = 1/3, P(a) = 1/3 $and $P(a_4) = 1/5$

• A.7/10
• B.2/3
• C.1/3
• D.3/10