Which of the Following Are Types of Conditional Contracts

Which of the following are types of conditional contracts?

A) Sale-on-approval contracts, but not sale-or-return or condition-or-sale contracts
B) Sale-or-return contracts and condition-or-sale contracts, but not sale-on-approval contracts
C) Condition-or-sale contracts and sale-on-approval contracts, but not sale-or-return contracts
D) Sale-on-approval contracts, sale-or-return contracts, and condition-or-sale contracts
E) Sale-on-approval contracts and sale-or-return contracts, but not condition-or-sale contracts