In Automatic amino-acid analyzer, the sample containing ___________ of each amino compound is introduced at the top of the ion exchange column.

• A. 1 to 10 ¬¨¬®¬¨¬µmoles
• B. 1 to 10 moles
• C. 0.05 to 2 moles
• D. 0.05 to 2 ¬¨¬®¬¨¬µmoles