"the congress shall have power to lay and collect taxes, duties, imposts, and excises, to pay the debts and provide for the common defense and

"the congress shall have power to lay and collect taxes, duties, imposts, and excises, to pay the debts and provide for the common defense and general welfare of the united states; but all duties, imposts and excises shall be uniform throughout the united states"

What type of powers does this quote from the constitution refer to?

A. powers reserved for the states

B. expressed powers of the federal government

C. implied powers of the federal government

D. powers denied to the federal government