Cho tam giác MNP bằng tam giác DEF, suy ra điều gì

Cho $∆MNP= ∆DEF$. Suy ra:
A.  $\widehat{MPN}$ = $\widehat{DFE}$
B. $\widehat{MNP }$= $\widehat{DFE}$
C. $\widehat{NPM}$ = $\widehat{DFE}$
D. $\widehat{PMN}$ = $\widehat{EFD}$