It's a bit hard to know without seeing the question. If you are just being given a set of balances and year end adjustments to make before closing I would enter the balances as being dated 31st March and then make the year end adjustments using the same date. I would then run the year end process dated 31st March and then make the new year's entries on 1st April.
Normally questions will say what date the list of balances is from so I would generally go with that and make all year end adjustments and run the year end process on the last day of the financial year.
I hope this helps but if I have misunderstood your question just message me back.