It shall be unlawful for any person, directly or indirectly, in connection with the purchase or sale of crude oil, gasoline, or petroleum distillates at wholesale, to:
(a) Knowingly engage in any act, practice, or course of business--including the making of any untrue statement of material fact--that operates or would operate as a fraud or deceit upon any person; or
(b) Intentionally fail to state a material fact that under the circumstances renders a statement made by such person misleading, provided that such omission distorts or is likely to distort market conditions for any such product.