Which of the following is TRUE about founder's shares?

a. The S&P 500 Index prioritizes companies with dual-class shares.

b. Founder's shares do not include voting privileges.

c. Common shareholders can purchase founder's shares if they own more than 10% of the company.

d. Founder's shares are designated as "Class B" shares to be sold to the public.

e. Companies with dual-class shares are no longer allowed to be added to the S&P 500 Index.