Assume the United States is an importer of televisions and there are no trade restrictions. U$.$S$.$ consumers buy $1$ million televisions per year, of which $400,000$ are produced domestically and $600,000$ are imported. Suppose that U$.$S$.$ imposes a tariff on the imports of televisions of $$100.$

How this change affects total surplus in the United States?

total surplus is decreasing

total surplus is increasing

total surplus doesn't change