Which of the following are examples of external marketing variables affecting a business? Select all that apply.

The U$.$S$.$ people elected a new president, and this affected the business expectation of the tax code

Increased immigration to the U$.$S$.$ from Latin America means there will be a larger percentage of the population by the year $2050.$

Recently, a vaccine for the covid$-19$ pandemic influenced consumer spending.

None of the above are external marketing variables.