Which functions should you use in the WHERE statement?

You are using a Microsoft Azure Stream Analytics query language.
You are outputting data from an input click stream.
You need to ensure that when you consecutively receive two rows from the same IP address within one minute,
only the first row is outputted.
Which functions should you use in the WHERE statement?

A.
Last and HoppingWindow

B.
Last and SlidingWindow

C.
LAG and HoppingWindow

D.
LAG and Duration