Explanation
According to the SAFe 5 for Lean Enterprises article on the Scaled Agile Framework website, the three configurations of SAFe 5.0 are Essential SAFe, Portfolio SAFe, and Full SAFe. The article states that "SAFe 5 for Lean Enterprises is a knowledge base of proven, integrated principles, practices, and competencies for Lean, Agile, and DevOps. It's configurable and scalable for a single team, a large program, a portfolio, or an entire enterprise. SAFe 5 for Lean Enterprises is available in three configurations: Essential SAFe, Portfolio SAFe, and Full SAFe." Therefore, the correct answers are A, Essential SAFe, B, Portfolio SAFe, and E, Full SAFe. The other options are not accurate, as they are not the configurations of SAFe 5.0. Team SAFe is not a configuration, but a level within the Essential SAFe configuration. Multi-train SAFe (D) is not a configuration, but a term that refers to multiple Agile Release Trains (ARTs) working together. Lean Enterprise SAFe (F) is not a configuration, but a goal that SAFe 5.0 aims to help organizations achieve.