A weekly television show stars six actors (J, K, L, M, N, O) with specific working conditions: J only works with M; N won't work with K; M can only work every other week; at least three actors must appear in every episode.
Question: In a show about L getting a job at the same company J works for and K used to work for (requiring J, L, K), which is true about other actors who may appear?
Options:
A. M, N, and O must all appear
B. M may appear and N must appear
C. M must appear and O may appear
D. O may appear and N may appear
E. Only O may appear
Answer: C