A government is exploring various sources of public revenue to finance its expenditures, including infrastructure, healthcare, and education. One of the primary sources of revenue is taxation, which includes income tax, corporate tax, and value-added tax (VAT). Another significant source is non-tax revenue, such as fees, fines, and royalties. In this scenario, the most sustainable and significant source of public revenue for the government is likely: A) Borrowing from international organizations B) Taxation C) Sale of government assets D) Voluntary contributions from citizens