question_answer

;fn \[a=\frac{\sqrt{3}+1}{\sqrt{3}-1}\] ,oa \[b=\frac{\sqrt{3}-1}{\sqrt{3}+1},\] rc \[{{a}^{2}}+ab+{{b}^{2}}=\] --------------

A) 15

B) 14

C) -15

D) \[15+16\sqrt{3}\]