Neal is writing a bon voyage letter to his friend Jake. Which is the most appropriate sentence to include in his letter?
A.
I wonder how things will have changed when you return from your trip.
B.
Spain is in Europe, which means you will have to travel a great distance.
C.
It is nice to see that you have got the opportunity to visit Spain.
D.
Goodbye, buddy! Have a safe and enjoyable journey to Spain.