The correct answer is A. As a result of the Embargo Act, British and French merchants suffered because they sold fewer goods.
The Embargo Act of 1807 sought to restrict foreign trade on the American coast. The act was passed by Congress during the second administration of President Thomas Jefferson.
It originated as a result of the Chesapeake-Leopard Affair involving the British warship Leopard and the American frigate Chesapeake, that was caused by a British ban on American commerce with France. The two European countries were at war (Napoleonic Wars), while the United States had remained neutral, but traded in secret with both sides.
According to Jefferson, the British violated the rights of Americans on the high seas and the embargo laws were passed in retaliation. These measures caused great damage to the American Economy, that of an export of $ 108 million in 1807, went to $ 22 million in 1808. The acts were repealed even at the end of the Jefferson administration. A modified version would come back with the restrictions during a brief period of 1813, in the administration of James Madison, that replaced Jefferson.