Why Did Polk Persuade Congress to Restore the Independent Treasury

Why did Polk persuade Congress to restore the Independent Treasury Act?

A) He hoped to give favored state banks exclusive management of government funds.
B) He sought to strengthen the economy by entirely replacing gold and silver with paper currency.
C) He planned to put large amounts of federal funds toward the infrastructure projects backed by the Whigs.
D) He intended to replace the Second National Bank with the Independent Treasury to offset the growth of unregulated state banks.
E) He thought the Treasury would help him to increase tariffs on imports and decrease foreign competition.