Choose the word which is different from the rest.

Customs
Service tax
Income tax
Sales tax

The answer is A. Customs.

Customs is a tax on goods imported into a country. It is levied by the government to protect domestic industries and to raise revenue.

Service tax is a tax on services provided in a country. It is levied by the government to raise revenue.

Income tax is a tax on the income of individuals and businesses. It is levied by the government to raise revenue.

Sales tax is a tax on the sale of goods and services. It is levied by the government to raise revenue.

Customs is different from the other options because it is a tax on goods imported into a country, while the other options are taxes on goods and services that are produced and sold within a country.