SSC Steno Grade C and D 10 Dec 2024 Shift 2 Paper

The following sentence has been divided into parts. One of them may contain an error. Select the part that contains the error from the given options. If you don't find any error, 1 select 'No error' as your answer. 
(a) The Gita
(b) is most sacred book/
(c) of the Hindus. /
(d) No error