What is the context of Mark 8:17-18?

• Beware the Leaven of the Pharisees and Herod (Mark 8:14-21 true)
• Yeast of the Pharisees and Herod (Mark 8:14-21 true)
• The Leaven of the Pharisees and Herod (Mark 8:14-21 true)
• The Yeast of the Pharisees and Sadducees (Mark 8:14-21 true)
• Beware of the Leaven of the Pharisees and Herod (Mark 8:13-21 true)
• The Yeast of the Pharisees and Herod (Mark 8:11-21 true)
• Four Thousand Fed (Mark 8:1-26 true)