how to sort grouped bar charts

The grouped bar chart seems to sort alphabetically by group name, column A in my example below. However, I'd like to sort the chart by the values of column B. `df.sort_values` doesn't seem to work.. Could you please let me know how to sort bart charts like this? Thanks!
```python
df = pd.DataFrame([['group B', 10, 30],['group A',20, 40],['group C',15, 10]], columns=['A','B','C'])
df.sort_values(by='B').hvplot.bar('A',['B','C'])
```