The term first purchaser means—

(a) except as provided in paragraph (b) of this section, any person buying or otherwise acquiring from a producer soybeans produced by such producer; or

(b) In any case in which soybeans are pledged as collateral for a loan issued under any Commodity Credit Corporation price support loan program and the soybeans are forfeited by the producer in lieu of loan repayment, the Commodity Credit Corporation.