What Were CBS-TV News Anchor Walter Cronkite's Intentions When He

What were CBS-TV news anchor Walter Cronkite's intentions when he told viewers on February 27, 1968, that "we have been too often disappointed by the optimism of the American leaders, both in Vietnam and Washington, to have faith any longer in the silver linings they find in the darkest clouds"?

A) He was urging the United States to seek a negotiated peace in Vietnam since the war was a stalemate.
B) He was advising President Johnson not to run for reelection because of the Vietnam crisis.
C) He was suggesting an escalated aerial bombing of North Vietnam to bring the war to a quick end.
D) He was recommending that the United States instigate another military coup in South Vietnam to stabilize and strengthen that government.