After-School Activities Running Late Entails That the Buses Will Run $\lor$

Multiple Choice

After-school activities running late entails that the buses will run late. The buses running late is a sufficient condition for either Carlos and Deandra getting home late or Edna missing dinner. Either after-school activities run late but Carlos doesn't get home late, or after-school activities run late but Deandra doesn't get home late. So, Edna misses dinner.
-Which of the following propositions is an immediate (one-step) consequence in PL of the given premises?

A) A • (∼C $\lor$ ∼D)
B) A • (∼C • ∼D)
C) A $\lor$ (∼C $\lor$ ∼D)
D) A $\lor$ (∼C • ∼D)
E) A ⊃ [(C • D) • E]