In Abu Dhabi, the index .FTFADGI rose 0.5%, with the biggest lender First Abu Dhabi Bank FAB.AD up 1.4%. Jan 16 (Reuters) - Most major Gulf markets closed higher on Monday as optimism over China's energy demand outlook and expectations of smaller U.S. rate hikes eased investors' worries, but Qatar extended losses. U.S. Federal Reserve policymakers on Thursday expressed relief that inflation continued easing in December, paving the way for a possible step down to a quarter point interest rate increase when the central bank meets in just under three weeks.