In the following questions, each question has a statement followed by two conclusions. Taking the statement to be true, decide which of the given conclusions definitely follows from the given statement. Indicate your answer as
Statement
Black cloud follows thunder. Rains follow thunder.
Conclusions
I. Thunder is the cause of rain.
II. Black cloud is the cause of thunder.

Options

A. A. If only I follows
B. B. If only II follows
C. C. If neither I nor II follows
D. D. If both I and II follow