Pedro Offered to Sell to Marita a Purported Diamond Ring

Pedro offered to sell to Marita a purported diamond ring which actually was a stone of inferior quality. Believing it to be a genuine diamond ring, Marita bought and paid for the ring. If later on, Marita discovers the misrepresentation, Marita may:

A) sue for damages alone because of dolo causante.
B) sue for rescission.
C) for annulment because of dolo incidente.
D) for annulment because of dolo causante.