Answer:
correct option is A. The vehicle will enter your lane
Step-by-step explanation:
when we are driving our vehicle on 2 lane road 
we are at 45 mph 
when we see that oncoming vehicle right wheel off the pavement 
it means that vehicle will try to come toward our lane because right wheel drop off pavement and enter in our lane 
so here correct option is A. The vehicle will enter your lane