P ? ?D $\frac { \sim \mathrm { P } } { \sim \mathrm { D } }$
A) MP-valid.
B) HS-valid.
C) MT-valid.
D) DA-invalid.
E) DS-valid.

Name: P ? ?D $\frac { \sim \mathrm { P } } { \sim \mathrm { D } }$ A) MP-valid. B) HS-valid. C) MT-valid. D) DA-invalid. E) DS-valid.
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The Answer of P ? ?D $\frac { \sim \mathrm { P } } { \sim \mathrm { D } }$
A) MP-valid.
B) HS-valid.
C) MT-valid.
D) DA-invalid.
E) DS-valid.

P ? ?D ∼P∼D\frac { \sim \mathrm { P } } { \sim \mathrm { D } }∼D∼P​

P ? ?D $\frac { \sim \mathrm { P } } { \sim \mathrm { D } }$