Read the text and determine if the sentence is true (see options at the end):

BOSTON, Nov 10 (Reuters) - Fidelity Investments was among the victims in a large hacking case unveiled by U.S. prosecutors on Tuesday, a person familiar with the matter said, speaking on condition of anonymity. Fidelity was referenced as a large Boston-based financial corporation in a court filing on Tuesday, the source said, as U.S. prosecutors unveiled criminal charges accusing three men of helping run a sprawling series of hacking and fraud schemes. (Reporting by Ross Kerber; Editing by Meredith Mazzilli)

Sentence: prosecutors know the law
Select from:
[a]. Yes.
[b]. It's impossible to say.
[c]. No.