Which of the following statements is correct in reference to the Human Development Report 2016 of the United Nations Development Programme?

a- 663 million people in developing countries have no access to safe water.
b- 2.4 billion have no access to sanitation, resulting in the death of more than three million children every year.

Both statements are correct.

According to the Human Development Report 2016 of the United Nations Development Programme, 663 million people in developing countries have no access to safe water and 2.4 billion have no access to sanitation, resulting in the death of more than three million children every year.