When applying the Pareto principle to customer profiling, it implies that the focus should be on $...$

a$.$

identifying the $20\%$ customer base that contributes $20\%$ of the outputs needed by the organisation.

b$.$

identifying the $20\%$ customer base that contributes $60\%$ of the outputs needed by the organisation.

c$.$

identifying the $20\%$ customer base that contributes $80\%$ of the outputs needed by the organisation.

d$.$

identifying the $80\%$ customer base that contributes $20\%$ of the outputs needed by the organisation.