The correct answer is C. Income.
Income is the gross inflow of economic benefits during a period of time, primarily in the form of cash and cash equivalents, receivables, and other liquid assets, irrespective of whether those benefits are realized in cash or not.
Assets are resources that a company owns and expects to benefit from in the future. They can be tangible, such as land or equipment, or intangible, such as patents or trademarks.
Liabilities are obligations that a company owes to others. They can be current liabilities, which are due within one year, or long-term liabilities, which are due more than one year in the future.
Expenses are the costs that a company incurs in order to generate revenue. They can be categorized as operating expenses, such as salaries and rent, or non-operating expenses, such as interest expense.
In conclusion, income is the gross inflow of economic benefits during a period of time, while assets, liabilities, and expenses are all components of a company’s financial statements.