How should this be accomplished?

A nonprofit organization is using Salesforce with the NPSP pre-installed. The nonprofit organization wants to give prospective volunteers a way to fill out their volunteer application online .

How should this be accomplished?
A . Create a web-to-case form in Salesforce with the fields needed to capture the information asked for on the form.
B . Set up the Volunteers for Salesforce Volunteer Signup Form on the nonprofit’s website.
C . Create a Chatter Group for prospective volunteers, assign them a Chatter Free license, and have users complete the form.
D . Set up the Volunteers for Salesforce Site Contact Information Site on the nonprofit’s website.

Answer: B