Answer:
B.He released all the passengers.
Step-by-step explanation:
D B Cooper was a criminal mastermind who in 1971 hijacked a plane which took off from Portland Airport and commandeered the flight after he told the flight attendant that he had a bomb.
He had some demands which included parachutes and $200,000 in cash. When he received his ransom, the act of kindness he performed at Seattle-Tacoma Airport was he released all the passengers.