How to Split from one cell to two cell?

Example:

A1: ABC: Apple Banana and Carrot

B1: ABC

C1: Apple Banana and Carrot

And how to include the arrayformula and leaveblank?

I tried this code: =index(SPLIT(A1,” “,true),1)

it shows only the ABC in the B1. It’s also not working for the whole column and there’s a word #VALUE! if it’s blank.