Which of the following is the correct order of steps to draw a standard Fischer projection for an L amino acid?

• A. Amino group on top, carboxyl group on the left, longest chain horizontal.
• B. Carboxyl group on top, longest chain vertical, amino group on the left.
• C. R group on top, amino group on the right, longest chain vertical.
• D. Carboxyl group on bottom, longest chain horizontal, amino group on the right.

Answer: (B)