Option a is the correct answer. The Mahamastakabhisheka is a big ceremony where Jain statues are anointed. The most well-known of these ceremonies is when the Bahubali Gommateshwara (the son of first Tirthankar Rishabhanatha) statue in Shravanabelagola, Karnataka, India, is anointed. This is an important Jain festival that happens every 12 years.