Design a safety protocol for using a separatory funnel in a laboratory setting. What key elements should be included?

• A. Wearing protective gear, ensuring the stopcock is closed before adding liquids, and venting the funnel regularly.
• B. Adding liquids without checking compatibility.
• C. Ignoring the need for a fume hood.
• D. Using a Bunsen burner to heat the funnel contents.

Answer: (A)