Consider the following statements regarding flagella in prokaryotic and eukaryotic cells: 1. Prokaryotic flagella are made of the protein flagellin and rotate like a propeller, driven by a proton motive force. 2. Eukaryotic flagella are composed of tubulin proteins arranged in a '9+2' microtubule doublet pattern and move in a bending/whiplike motion. 3. Both prokaryotic and eukaryotic flagella are surrounded by an extension of the plasma membrane. Which of the statements given above is/are correct?

Options:

• A: 1 and 2 only
• B: 2 and 3 only
• C: 1 and 3 only
• D: 1, 2 and 3

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