Cho hình vẽ sau:Biết a // b, \(\widehat {{A_1}} - \,\,\widehat {{C_1}} = {40^o}\). Tính \(\widehat {{A_2}},\widehat {{C_2}}\)

A. \(\widehat {{A_2}} = {80^o},\widehat {{C_2}} = {110^o}\)

B. \(\widehat {{A_2}} = {110^o},\widehat {{C_2}} = {70^o}\)

C. \(\widehat {{A_2}} = {70^o},\widehat {{C_2}} = {110^o}\)

D. \(\widehat {{A_2}} = {70^o},\widehat {{C_2}} = {70^o}\)