Trong hình dưới đây cho biết góc M4 bằng góc N2 bằng 100 độ

A. $\widehat{M_1}=\widehat{M_3}=\widehat{N_1}=\widehat{N_3}={80}^o;\widehat{M_2}=\widehat{N_4}={100}^o$

B. $\widehat{M_1}=\widehat{N_1}={80}^o;\widehat{M_2}=\widehat{N_4}={100}^o;\widehat{M_3}=\widehat{N_3}={60}^o$

C. $\widehat{M_1}=\widehat{M_3}={80}^o;\widehat{M_2}=\widehat{N_4}={70}^o;\widehat{N_1}=\widehat{N_3}={100}^o$

D. $\widehat{M_1}=\widehat{M_3}=\widehat{N_4}=\widehat{N_3}={80}^o;\widehat{M_2}=\widehat{N_1}={100}^o$