This is a good one to think through. Glad to see you're back at the top of your game!
There are only two ways to tell somebody thanks: Kudos and Marked Solutions Unofficial Forum Rules and Guidelines "Not that we are sufficient in ourselves to claim anything as coming from us, but our sufficiency is from God" - 2 Corinthians 3:5
The autoindexing pulls off the rows. Consequently, it also builds in rows.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions Unofficial Forum Rules and Guidelines "Not that we are sufficient in ourselves to claim anything as coming from us, but our sufficiency is from God" - 2 Corinthians 3:5
And when in doubt, run it with probes and highlight execution. It will become really clear what is happening then.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions Unofficial Forum Rules and Guidelines "Not that we are sufficient in ourselves to claim anything as coming from us, but our sufficiency is from God" - 2 Corinthians 3:5
the answer is A as crossrulz said, here the for loop runs 2 time on the first iteration it takes (1,2) (5,6) (9,10) and applies interleave is applied (1,5,9,2,6,10)for the next time(3,4) (7,8) (11,12) and the interleave is applied (3,7,11,4,8,12) the output is 2D array so option A is the most appropriate answer.
Auto-indexing pulling off Rows is the thing to take from this. Interleave array does what you expect it to do and is here to add some spice to the question..