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(S ? Q) • (?W ? ?C) WSQC\frac { \sim \mathrm { W } \vee \mathrm { S } } { \mathrm { Q } \vee \sim \mathrm { C } }

Question 76

Multiple Choice

(S ? Q) • (?W ? ?C) WSQC\frac { \sim \mathrm { W } \vee \mathrm { S } } { \mathrm { Q } \vee \sim \mathrm { C } }


A) MP-valid.
B) Invalid.
C) DD-valid.
D) CD-valid.
E) DD-invalid.

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