Question

What is the contrapositive of the following statement?

"If the lights are off, there is no one inside."

If the lights are not off, there is someone inside.
If there is no one inside, the lights are not on.
If the lights are on, there is someone inside.
If there is someone inside, the lights are on.

Answer 1

am i right with D?

Answer 2

switching the statements and negating both. D is correct.

Answer 3

thank you