developed or was developing

[jasonlulu_2000]

Their friendship _____ quickly over the weeks that followed.
A. developed B. was developing


I chose B, as I thought it was meant to show a certain period of time.

Does it make sense?

What's your opinion? Are they both right?

Thanks!

Jason

 

[Tdol]

In that example, I would use a). If there were more context, b) could work, but without context, it sounds strange to me.