Oil ends down after one-month low; U.S. inventory data awaited

By Barani Krishnan NEW YORK (Reuters) - Oil settled down on Tuesday after hitting one-month lows, ahead of data likely to show a U.S. crude inventory build and on renewed doubts about whether OPEC will follow through with proposed output cuts. The American Petroleum Institute (API), an industry group, will report weekly U.S. crude stockpiles numbers at 4:30 p.m. EDT (2030 GMT) ahead of official inventory data from the government on Wednesday. U.S. West Texas Intermediate (WTI) crude fell 19 cent