Which of the Following Statements Is TRUE

Which of the following statements is TRUE?

A) All claims by companies in their ads create legally binding contracts
B) Courts initially presume agreements between family members are valid contracts.
C) A seal on a contract can make it legal even if the contract is against public policy.
D) Some ads by companies are just "puff" and do not create a legally binding contract
E) Parents are usually liable for contracts that their children created.