In Jeffry's High School, the Science Club Is Set Up

In Jeffry's high school, the science club is set up to use guided participation. He helps to clean all of the beakers and organize the chemicals and watches one of the more experienced students, Uli, create chemical compounds. In this situation, Jeffry is the ________ and Uli is the ________.

A) central participant; junior participant
B) legitimate peripheral participant; central participant
C) legitimate peripheral participant, experienced participant
D) central participant; legitimate peripheral participant