Answer:
The answer is D.
Step-by-step explanation:
Gross profit or margin is the profit a business generate after deducting cost of sales from its sales or revenue.
Gross profit or margin percentage is expressed as gross profit/sales(revenue) x 100
In the question, gross profit for company A is $400 and sales is $1000
Therefore, gross profit percentage is 400/1000 x 100
=40%