Which of the following statements is NOT a principle of Blended Finance? a) Blended finance should be used as transitionary solution when there are externalities, market failures, affordability constraints, or information deficiencies in the market that prevent dynamic development of the private sector. b) When using blended finance, concessionality should be maximized to help develop and encourage future sustainable commercial markets. c) Blended finance should not be used to address externalities that require permanent subsidies. d) Blended finance solutions must be considered complementary to other tools and approaches advisory services, regulatory reform, or public sector-financed infrastructure improvements to make projects commercially viable in the long run