Which of these is a statement of opinion? (A) Many civil engineers, environmentalists, and citizens have protested the USACE's instructions to remove trees.

(B) In Portland, Oregon, residents lost a legal battle with the USACE to keep cottonwoods and poplars along the Columbia River. Groups that successfully block the USACE's plan to cut down trees near levees are putting public safety at risk. Groups that successfully block the USACE's plan to cut down trees near levees are putting public safety at risk.
(C) Groups that successfully block the USACE's plan to cut down trees near levees are putting public safety at risk.

(D) The USACE abandoned plans to clear vegetation from 1,600 miles of levees in California.