Which statement best develops an argument to defend why the national government should prioritize spending on the interest of its debt?

The national government should prioritize spending on the interest of its debt only when it has extra money.
The national government should prioritize spending on the interest of its debt only when it has extra money.

The national government must pay the interest on its debt to ensure access to loans. 
The national government must pay the interest on its debt to ensure access to loans. 

Payment of interest on loans is a constitutional duty that must be fulfilled by the national government.
Payment of interest on loans is a constitutional duty that must be fulfilled by the national government.

The national government should prioritize spending on the interest of its debt only during a budget deficit.
The national government should prioritize spending on the interest of its debt only during a budget deficit.

Which one is the correct answer?

The national government must pay the interest on its debt to ensure access to loans.