Identify the part of the statement(s) that contains a grammatical error from the following: [I] The most striking thing on the JMI wall is (A) the nat...

Identify the part of the statement(s) that contains a grammatical error from the following:

[I] The most striking thing on the JMI wall is (A) the national flag, hundreds of which are (B) strung together in such a way that the (C) tricolour runs parallel with the road. (D)

[II] It is disturbing that assassination (A) is no longer universally (B) condemned by all, as it was (C) until the last decade or two. (D)

[III] While, Gurdwara Bangla Sahib (A) is known by all, there are (B) other Sikh shrines too that (C) tell interesting and inspiring stories. (D)

Choose the correct option that mentions the part(s) with error.