Directions: In the following question, two statements are given with some words in bold. Which of the following pairs of bold words must be interchanged to make both sentences grammatically correct?

a. Due to the poor design(A) of the online education system, there are not many institutes in India that averted(B) this kind of rescued(C).
b. A major tragedy was offer(D) when firefighters facility(E) several people from a five-storey building in Kanpur after a massive(F) fire broke out on Tuesday morning.