Answer:
a. $490,000
Explanation:
Segment revenue will be recorded it if exceeds the limit of 10% of total sales .In this question sales made to unaffiliated customers and intersegment saels is the total sales value.
Sales to unaffiliated customers = $4,000,000
Intersegment Sales similar to Sold to unaffiliated customers = $900,000
Total Sales = $4,000,000 + $900,000 = $4,900,000
Segment revenue will be recorded if total sales increases $490.000 ($4,900,000 X 10%)