The Commission shall have exclusive jurisdiction, except to the extent otherwise provided in subparagraphs (C) and (D) of this paragraph and subsections (c) through (i) of this section, with respect to accounts, agreements (including any transaction which is of the character of, or is commonly known to the trade as, an “option”, “privilege”, “indemnity”, “bid”, “offer”, “put”, “call”, “advance guaranty”, or “decline guaranty”), and transactions involving contracts of sale of a commodity for future delivery (including significant price discovery contracts), traded or executed on a contract market designated or derivatives transaction execution facility registered pursuant to section
7 or
7a of this title or any other board of trade, exchange, or market, and transactions subject to regulation by the Commission pursuant to section
23 of this title. Except as hereinabove provided, nothing contained in this section shall