What does the so-called Best Run Score in plug and gain by SAP Signavio indicate?

What does the so-called Best Run Score in plug and gain by SAP Signavio indicate?
A . The efficiency of processes based on SAP recommendations
B . The extent of process automation in the ERP system
C . The size of the data backlog in the ERP system
D . The number of cases that have completed the process in time

Answer: A