Read the sentence: Thomas Edison, whose accomplishments are legendary, will be our focus next week.

Which is the relative pronoun, and what is its function in the sentence?

ARelate pronoun is our, it functions as part of the adverb clause.

BRelative pronoun is our, it functions as part of the adjective clause.

CRelative pronoun is whose; it functions as part of the adverb cause.

DRelative pronoun is whose; it functions as part of the adjective clause.