Question: For the following SQL query SELECT R . b , avg ( R . a ) FROM R GROUP BY R . b HAVING sum

For the following SQL query
SELECT R.b, avg(R.a) FROM R GROUP BY R.b HAVING sum(R.d)>100,
what is the value generated from the map function for each output record?
Group of answer choices
The value in columns a, b (concatenated)
The value in column a, d (concatenated)
The value in column a

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