Concept:Bihar as a separate province under British rule was created in 1912, not in any of the given years.
Explanation:The present-day state of Bihar was formed when the Bihar and Orissa province was carved out of the Bengal Presidency in 1912.
Later, in 1936, Orissa became a separate province, leaving the present boundaries of Bihar.
The options list 1915, 1911, and 1906, but the correct formation year is 1912, which is not among them.
Hence, none of the given options match the actual year of formation.
Answer:Option D (None of the above)