The correct answer is A. lien.
A lien is a legal right to retain possession of goods until a debt is paid. In the context of sales law, an unpaid seller has a lien on the goods sold until the price is paid. This means that the seller can keep the goods until the buyer pays the price, even if the buyer has already taken possession of the goods.
A stoppage in transit is a right that allows a seller to stop goods in transit if the buyer has not paid for them. This right can only be exercised if the goods are still in the possession of a carrier or other third party.
A pledge is a security interest in personal property that is created by a borrower giving possession of the property to a lender. The lender can then sell the property if the borrower does not repay the loan.
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