Quick question on rain tire strategy, I just ran the 78 lapper in Monaco, with rain coming around lap 30 and drying out around lap 55. I started the race with two option tire stops, then the rain came. Do I have to take on a set of primes when the rain stops, or can I run options until the end? I took the prime tire to end the race, because for some reason I thought you had to. Hopefully someone can clarify, thanks.