What is the most logical next event?

How to surprise your partner with a gift
Write a surprise message in a surprising location.
Write a surprise message for your partner. Put it in their wallet or purse, so they are surprised to find a lovely message.

Choose your answer from:
[A]. Make the message 18-24 hours in advance so it is unexpected. Surprise your partner in a surprising way.
[B]. You could also mail a message on a cute postcard. In the message, you can tell them how much you love them and give them directions for how to find their surprise gift.
[C]. The surprise message should be plain and easy to read. It's a good idea to make your message bit of an afterthought when planning your surprise, but not so much when it's actually good.
[D]. Surprise your partner in a cool place, like a park or in a nice restaurant. Type something funny, or witty along with your surprise note.
[B].