Based on the conditions stated in the passage below, answer the questions that follow.

There are three countries, USA, UAE and UK. An exporter can select one country or two countries or all the three countries subject to the conditions below:
Condition 1: Both USA and UAE have to be selected.
Condition 2: Either USA or UK, but not both have to be selected.
Condition 3: UAE can be selected only if UK has been selected.
Condition 4: USA can be selected only if UK is selected.