Rena Is a Book Dealer and an Expert in the Publications

Rena is a book dealer and an expert in the publications of Shakespeare's plays. She tells Toby, an investor in rare books, that in her opinion a certain bound volume is an early edition of several Shakespearean dramas. Rena has warranted

A) nothing.
B) the basis for a bargain between Toby and the owner of the volume.
C) the appropriateness of the volume as an investment.
D) the accuracy of her opinion.