If $a=1, \,b=-2 \sqrt{3}, \,c=2,$ then the standard quadratic polynomial is ..........
- A$x^{2}+2 \sqrt{3} x+2$
- B$x^{2}-2 \sqrt{3} x+2$
- C$2 x^{2}-2 \sqrt{3} x+1$
- D$2 x^{2}-\sqrt{3} x+2$
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