2016 AM 3A Large cap growwth equity mandate to puree indexing mandate

how do you know which index the fund is using for pure indexing mandate?this is confusing where do I get the information it is using the US large cap growth equity mandate

In second statement they say which fund will be replaced with pure indexing mandate.

the whole question 3 is such bs, also question 3c ii, how are you supposed to get this answer on the day???

oh replacing!

I understood this as they are changing the index, or benchmark to calculate information ratio…errrr

any idea on part c?