(C) Ⅲ only
(D) Ⅰand Ⅱonly
(E) Ⅰ,Ⅱ,and Ⅲ
16. If Norma and Olivia each enter different events, then which one of the following cannot be true?
(A) Kevin and Olivia enter the marathon.
(B) Julio and Norma enter the relay.
(C) May and Olivia enter the relay.
(D) Norma and Tamio enter the relay.
(E) Olivia enters the sprint and Tamio enters the relay.
17. If both Julio and Kevin enter the relay, then which one of the following must be false?
(A) May and Norma enter the marathon.
(B) May and Olivia enter the marathon.
(C) Norma and Tamio enter the sprint.
(D) May and Norma enter the sprint.
(E) May enters the sprint and Tamio enters marathon.
Questions 18-23
Seven lights-J, K, L, M, N, O, and P-have only two possible settings: on or off. They are arranged on a particular electric circuit as follows.
If K is on, L is off; if K is off, L is on.