Answer:
Step-by-step explanation:

Answer:
Third one
Step-by-step explanation:
Answer: B
Step-by-step explanation:
The converse means X --> Y , so Y --> X.
In other terms, you just need to reverse the terms and review that it turns out correct. In answer B, it does that just right.
Answer:
Look at the picture
Step-by-step explanation:
The answer is B. -9