Probability that a person will develop immunity after vaccination is . If 8 people are given the vaccine then probability that all develop immunity is
(A)
(B)
(C) 1
(D)

Correct option is

(B)

Probability that a person develops immunity after vaccination is

8 people are given vaccine

Probability of developing immunity after vaccination of two people will be

Probability that all develop immunity after vaccination will be

Hence, the answer is