Read this and answer the question. If the question is unanswerable, say "unanswerable".

The CBSE (Central Board of Secondary Education) of India, along with several other state education boards, has made Sanskrit an alternative option to the state's own official language as a second or third language choice in the schools it governs. In such schools, learning Sanskrit is an option for grades 5 to 8 (Classes V to VIII). This is true of most schools affiliated with the ICSE board, especially in those states where the official language is Hindi. Sanskrit is also taught in traditional gurukulas throughout India.

What is the only India board of education?
unanswerable