Answer: (a)

Explanation:
Statement 1 is correct: The Multidimensional Poverty Index (MPI)—both at the global and national level—is calculated using the globally acclaimed Alkire-Foster (AF) methodology. This dual-cutoff mathematical technique measures both the headcount ratio, how many people are poor) and the intensity of poverty, how poor they are).

Statement 2 is correct: The National MPI published by NITI Aayog covers a total of 12 indicators grouped under three macro dimensions (Health, Education, and Standard of Living).

Statement 3 is incorrect: Maternal Health and Bank Accounts are not common to both indices. The Global MPI developed by the UNDP and OPHI utilizes a baseline of exactly 10 indicators. When NITI Aayog adapted this model for India, it specifically added 2 country-specific indicators—Maternal Health (under Health) and Bank Account (under Standard of Living)—meaning these two exist only in the Indian National MPI.