听力原文：Hello, Nicole. This is William. Hope everything is going well in Port Chester. I'

m in Albany now. I'm calling for two reasons: first, to let you know that I'll be in Port Chester on the twenty-ninth. I'll be taking the train down from Albany. Which leads me to my second point: do you think you or someone could pick me up at the Croton train station？ I just looked at the train schedules and I realized that to get to Port Chester from Albany, I would have to go down to Penn Station in Manhattan and then back up to Port Chester from Grand Central Station. It would be great if I could avoid that extra time and travel. If not, I'll manage, but please give me a call on my cell phone when you have a chance and we can figure it out. Thanks. Bye.

Why has William called Nicole？

A．To tell her about a meeting

B．To tell her his travel plans

C．To ask her when she will leave Albany

D．To ask when she will arrive in Port Chester