Lupe and Rodrigo, Father and Son, Each Own 50% of the Stock

Lupe and Rodrigo, father and son, each own 50% of the stock outstanding of Heron Corporation (E & P of $400,000) . During the current year, Heron redeems all of Lupe's shares for $250,000. The transaction cannot qualify as a complete termination redemption if:

A) Lupe filed an agreement with his return to notify the IRS of any prohibited interest acquired in the 10-year postredemption period.
B) Lupe continued to serve on Heron Corporation's board of directors for one year following the redemption.
C) Lupe received a $250,000 note receivable from Heron in the stock redemption.
D) Lupe loaned Heron Corporation $50,000 two years following the redemption.
E) More than one of the above is correct.