Multi-choice problem: Continue writing the next sentence in this paragraph:

A man with a button down shirt behind a bar is showing how to make some mixed drinks. he

Select from:
[a]. explains how to use the blender which he also pours into other drinks.;
[b]. starts to pour into a little silver cup and then into the glass.;
[c]. is then working out in a gym while using a rowing machine.;
[d]. picks up a bottle of the liquid and moves to his right.;
[b].