Which of the Following Cases Stated That,"If an Agency Considers

Which of the following cases stated that,"If an agency considers all of the relevant factors so that a court can satisfy itself that the agency has actually exercised its discretion,an agency's decision to refrain from investigation is unreviewable…"?

A) Chevron, U.S.A., Inc. v. Natural Resources Defense Council, Inc.
B) Brock v. Roadway Express, Inc.
C) Gonzalez v. Reno
D) General Motors v. Federal Energy Regulatory Commission