Which of the following types of contracts MUST be in writing to be valid. (Choose all that apply.) Contracts that involve parol evidence Contracts involving estates Contracts for marriage Contracts for real property Contracts in which one person agrees to be held liable for the debts of another person Contracts between merchants involving goods worth more than $500.00 Contracts that will take more than one year to complete Contracts involving only personal property Contracts in which a minor is a party Contracts that are extremely important to the parties