Final answer:
An original straight ocean B/L is not a negotiable document, but it can be endorsed to transfer rights to the goods.
Step-by-step explanation:
An original straight ocean B/L (bill of lading) is a document that serves as evidence of a contract of carriage between a shipper and a carrier. It contains important information such as the shipper, carrier, consignee, description of goods, and other terms and conditions of the transportation. The B/L itself does not give the title to the goods and is not a negotiable document, so options A and B are incorrect.
However, the B/L can be endorsed to transfer the rights to the goods and can serve as a document of title when made negotiable, so option C is correct. Therefore, the correct answer to the question is C. the B/L itself could be endorsed.