Which enolate of butanone is more stable?

Consider butanone (**A**) and its two possible enolates **B** & **C**.


Which of the two enolates will be more stable? **B** because of the more stable primary carbanion, or **C** because of more stable enolate (better hyperconjugation)?


[![enter image description here](https://i.stack.imgur.com/cT69v.png)](https://i.stack.imgur.com/cT69v.png)


