What is one way Lean-Agile leaders lead by example?

What is one way Lean-Agile leaders lead by example?
A . By mastering the Seven Core Competencies of the Lean Enterprise
B . By modeling SAFe’s Lean-Agile Mindset, values, principles, and practices
C . By using the SAFe Implementation Roadmap to script the path for change
D . By applying empathic design and focus on Customer Centricity

Answer: B