Answer: (b). Net income is calculated by taking the income subtotal and subtracting the expenses subtotal.
Step-by-step explanation: When we prepare monthly budget, we always keep in mind that the net expenses should not exceed our monthly income, otherwise we will be in debt.i.e,.
Net income= Income subtotal-expenses subtotal.
Here, options (a), (c) and (d) are incorrect. The only correct statement id (b).
Thus, (b) is the correct option.