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Only, Only If, Requires, and Depends On
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LSAT
LR.049 Only, Only If, Requires, and Depends On
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A rescue launch cannot occur without weather clearance and either daylight or night-navigation authorization. Let L mean launch, W mean weather clearance, D mean daylight, and N mean night authorization. Which formula is correct?
A
(W and (D or N)) -> L
B
L -> ((W and D) or N)
C
L -> (W and (D or N))
D
L -> (W or (D and N))
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