Define injection solvent effect.

Define injection solvent effect.

• A. A mismatch between sample solvent strength and mobile-phase strength can cause distorted peaks, early elution, or fronting; mitigate by dissolving samples in solvent similar to mobile phase or using gradient.
• B. Injection solvent effect always improves peak symmetry.
• C. It only affects the retention time but not peak shape.
• D. It is only relevant in GC, not in LC.

Answer: (A)