Cells as the basic units of living organisms — practice question

Which cell structures occur in every prokaryotic cell?

• Acell surface membrane ✓, cell wall ✓, endoplasmic reticulum ✗, flagellum ✓
• Bcell surface membrane ✓, cell wall ✓, endoplasmic reticulum ✗, flagellum ✗
• Ccell surface membrane ✓, cell wall ✗, endoplasmic reticulum ✓, flagellum ✗
• Dcell surface membrane ✗, cell wall ✓, endoplasmic reticulum ✓, flagellum ✓