Q.With reference to the Human Development Index (HDI), consider the following statements: (a) It is published annually by the United Nations Development Programme (UNDP). (b) The HDI is a geometric mean of normalized indices measuring achievements in three key dimensions: a long and healthy life, access to knowledge, and a decent standard of living. (c) The 'standard of living' dimension is measured solely by the Gross Domestic Product (GDP) per capita at purchasing power parity (PPP). Which of the statements given above is/are incorrect?