Separating data with spaces and putting in two different cells

My issue is complicated. I need to take data from a cell that has a space "cherry banana", and make it into two cells "cherry" and "banana". I want to duplicate my line on which the data resides, if possible.

What I have is a sheet like this:

IDs Data
1   banana
2   apple
3   cherry apple
4   cherry banana apple
5   apple

and I need to turn it into this:

IDs Data
1   banana
2   apple
3   cherry
3a  apple
4   cherry
4a  banana
4b  apple
5   apple

Any idea how I can do this?

If not, then how do I simply parse out my data in a cell to other cells using the space as the delimiter?

Thanks,
Multi