Choice "B" is correct. A listed transaction is a tax avoidance transaction. It is a reportable transaction (a transaction that is required to be reported on a return or statement attached to that return which is the same as, or substantially similar to, a transaction specifically identified by the Secretary of the Treasury as a tax avoidance transaction). Listed transactions include sale-in/lease-out transactions, certain offsetting currency transactions solely used for losses but not gains, and loss transactions resulting in a taxpayer claiming a tax loss exceeding certain specified amounts.Choice "d" is incorrect. A marketed opinion is advice that will be used to promote, market, or sell a partnership, investment plan, or arrangement. The form is certainly not limited to a corporate form.Choice "a" is incorrect. A marketed opinion does not include advice which is about any arrangement the principal purpose of which is not federal tax avoidance or evasion (essentially, a marketed opinion cannot cover advice on other non-related topics). Choice "c" is incorrect. A reportable transaction is any transaction that is required to be reported on a return or statement attached to a return because the transaction is taken into account to determine taxable income and the transaction has the potential for tax avoidance or tax evasion. A listed transaction is a transaction that is substantially the same as a tax avoidance transaction; it is one of the types of reportable transactions. There is no requirement to report a reportable transaction on a separate line of a federal tax return, but the transaction must be disclosed.