The correct answer is A. Rs. 4,000.
Operating expenses are the costs incurred by a company in the day-to-day running of its business. They include costs such as rent, salaries, utilities, and marketing. To calculate operating expenses, we can use the following formula:
Operating expenses = Gross profit – Net income
In this case, we are given that sales are Rs. 18,000, gross profit is Rs. 5,000, and net loss is Rs. 1,000. Substituting these values into the formula, we get:
Operating expenses = Rs. 5,000 – Rs. 1,000 = Rs. 4,000
Therefore, the amount of operating expenses is Rs. 4,000.
Option B is incorrect because it is the amount of net income. Option C is incorrect because it is the amount of gross profit. Option D is incorrect because it is the amount of sales.