What Are the Five Key Competencies in the HR Model

What are the five key competencies in the HR model introduced by David Ulrich?

A) mastery of technology, strategic contribution, HR knowledge, business knowledge, integrity
B) strategic contribution, HR delivery, business knowledge, personal credibility, HR knowledge
C) mastery of technology, strategic contribution, HR delivery, personal credibility, business knowledge
D) mastery of technology, transactional contribution, customer service, credibility, HR knowledge
E) strategic contribution, HR mastery, HR delivery, mastery of technology, personal credibility