Statistics for Three-Letter Acronyms #2

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Hint	Answer	% Correct
Cash machine	ATM	97%
Company president	CEO	94%
Dynamite alternative	TNT	80%
LBJ's predecessor	JFK	75%
Person captured by the enemy	POW	72%
Network on which Doctor Who airs	BBC	70%
I will return shortly	BRB	69%
Tape format that conquered Betamax	VHS	62%
Band with Axl Rose and Slash	GNR	58%
Place between the Koreas	DMZ	52%
Promissary note	IOU	52%
Magic Johnson's affliction	HIV	51%
Hoppy type of beer	IPA	50%
Businessperson's degree (U.S.)	MBA	48%
U.S. agency exposed by Snowden	NSA	48%
E.T.'s ship?	UFO	44%
Bested the Luftwaffe in the Battle of Britain	RAF	42%
Chip that is the "brain" of a computer	CPU	41%
Currency code for the UK	GBP	40%
Bounty, Beagle, or Pinafore, e.g.	HMS	39%
Effective insecticide	DDT	37%
Angel dust	PCP	33%
Software for draftsmen	CAD	27%
Letters at the end of a logical proof	QED	20%