Adding a line break for a new paragraph...

I am looking at what the most acceptable functionality of the Comments and Reply text boxes are when adding a reply.

What would work the best for you in the Comments and Reply text boxes?

A: The Enter/Return key posts the Comment/Reply and you have to hold down Shift + Enter to create a line break for a new paragraph.

B: Enter/Return key adds a new line break for a new paragraph and you have to press the Send key to post the Comment/Reply