Is there anyone who's good in forensics that can me with my questions and can provide me the correct answers, ?

Difference between joint tenancy and tenancy in common

What was the effect of the supreme court’s ruling in citizens united v. federal election commission? a. it removed limitations on corporate funding of political broadcasts. b. it removed all limits on campaign contributions by interest groups. c. it prohibited corporations and businesses from contributing to political campaigns. d. it prohibited interest groups from contributing to individual candidates.

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