To answer this question, we need to understand the ROUND function in SQL.
The ROUND function is used to round a number to a specified number of decimal places or to the nearest whole number. It takes two arguments: the number to be rounded and the number of decimal places to round to.
In this case, the number to be rounded is -123.39953 and the number of decimal places to round to is -3.
When rounding to -3 decimal places, we are rounding to the nearest thousands place.
The correct answer is A) 0.
This is because -123.39953, when rounded to the nearest thousands place, becomes 0.