Which of the Following Was False About the Lewis and Clark

Which of the following was false about the Lewis and Clark expedition?​

A) Jefferson sent Lewis and Clark out to strengthen U.S.claims to the West.
B) Lewis and Clark were to search for a Northwest Passage and bring back descriptions of unknown species of plants and animals.
C) ​The Corps of Discovery engaged in a series of armed conflicts with Native Americans at nearly every stop along their entire route.
D) ​Sacagawea helped guide the party up the Missouri River and through the Rockies.
E) ​The group brought back amazingly detailed descriptions of the lands,plants,and animals that they encountered.