What are the $4$ steps in the Blue Ocean strategy process $?$

$($Select ALL that apply$)$

a$.$

Identify the firm's core competencies

b$.$

Brainstorm the strategic moves that should be adopted

c$.$

Select and validate the new target value proposition

d$.$

Make trade off choices in the firms strategic position and value chain

e$.$

Assess current customer pain points

f$.$

Map how the industry currently competes