Solution & Explanation

• Polarity: a (Most Polar) > b > c (Least Polar)
• Elution Order (Exit Speed): c comes out first, then b, and a comes out last.

• ❌ Statement A is INCORRECT: It states 'c' is the most polar. Since 'c' moved fastest to the bottom, it is actually the least polar.
• ❌ Statement B is INCORRECT: It states 'a' is the least polar. Since 'a' is stuck at the top, it is the most polar.
• ❌ Statement C is INCORRECT: It states 'b' comes out before 'c'. Because 'c' is at the bottom, 'c' must exit the column before 'b'.
• ✅ Statement D is CORRECT: It states 'a' spends more time in the column. Since 'a' moves the slowest, it stays inside the longest.

Since we are identifying the incorrect statements, the answer must include A, B, and C.