GLOBAL MARKETS-Dollar falls after Fed comments, stocks resume selloff

* Crude oil prices continue to fall, Brent near 4-year low* Dollar retreats on global growth concern, Fed views* Trade data eases worries over China slowdown(Updates prices, adds comment)By Rodrigo CamposNEW YORK, Oct 13 (Reuters) - The U.S. dollar weakened on Monday after comments from Federal Reserve officials hinted that interest rate hikes could be delayed, lifting pressure off metals prices,