For the past year, a country has $200 million of exports of goods and services, $160 million of imports of goods and services, $60 million of income received from foreigners, and -$40 million of net unilateral transfers. What is the range of values for income paid to foreigners, so that each of the following would be true?

a. The country has a current account surplus.

b. The country has a deficit for its goods and services balance.

c. The country is a net borrower from the rest of the world.