Excerpt from Pet Dangers Carole Jenkins (5) Although the exact cause is not known, gastrointestinal problems will result after a pet ingests grapes or raisins. Choose the BEST revision of sentence (5).

A) Although the exact cause is not known, gastrointestinal problems result after a pet ingests grapes or raisins.

B) Although their exact cause is not known, gastrointestinal problems result after a pet ingests grapes or raisins.

C) Although the exact cause is not known, gastrointestinal problems can result after a pet ingests grapes or raisins.

D) Although their exact cause is not known, gastrointestinal problems can result after a pet ingests grapes or raisins.