By Colleen Howe
BEIJING (Reuters) -Oil prices edged up on Tuesday, hovering close to three-week highs on heightened Middle East tensions and recovering China demand.
Brent futures ticked up 3 cents to $83.59 a barrel by 0757 GMT.
U.S. West Texas Intermediate (WTI) crude for April delivery inched up 2 cents to $78.48 a barrel. The March WTI…