Final answer:
The budgeted gross margin for March 2015 is $392,040. Option A.
Step-by-step explanation:
The budgeted gross margin for March 2015 can be calculated by subtracting the budgeted cost of goods sold from the budgeted sales revenue.
Given that the budgeted sales revenue is $850,000 and the budgeted cost of goods sold is $458,960, we can calculate the budgeted gross margin as follows:
Budgeted Gross Margin = Budgeted Sales Revenue - Budgeted Cost of Goods Sold
Budgeted Gross Margin = $850,000 - $458,960 = $391,040
Therefore, the correct answer is A) $392,040.