Which of the following is the most effective call to action to encourage interested moms to sign up.

Which of the following is the most effective call to action to encourage interested moms to sign up for free CafeMom membership? a. Sign up for your free Join CafeMom membership today and get knowledge and camaraderie you can t get anywhere else. b. Visit CafeMom.com today and learn about the many benefits of free membership. c. Every mom belongs in CafeMom; won t you please join today? d. CafeMom will change your life in ways you could never have imagined, and it s free!