With reference to Human Development (HD), consider the following statements:
• Growth is quantitative and value-neutral, whereas development is qualitative.
• Dr. Mahbub-ul-Haq and Prof. Amartya Sen worked together on human development concepts.
• Equity, Sustainability, Productivity, and Empowerment are the four pillars of human development.
• High level of human development is always directly linked to the high income level of a country.
Which of the statements given above are correct?