Which flow for the bottle nipple?

Hannah • 💍 married in 2018. 🤰🏼due with our first 11/18! ✝️ loved and blessed by Christ.

I’m mainly planning to nurse but will also pump and have bottles available for my husband to feed the baby a couple days a week when I work. Which size nipple should I get for the bottle? Slow flow, medium flow, or fast flow?