What Was the Primary Reason Vietnam War Veterans Returned to the United

What was the primary reason Vietnam War veterans returned to the United States without much fanfare?

A) American society was divided over the cause for which these soldiers had risked their lives and/or endured physical injuries.
B) Many Americans disapproved of the large number of soldiers who smoked marijuana while on active duty in Vietnam and came back with drug dependencies.
C) The tens of thousands of Vietnam War veterans who suffered debilitating physical injuries overburdened and depleted the American health care system.
D) The return of Vietnam War veterans led to greater competition in the job field in a time when the American economy was suffering.