The table presents the amounts for a country’s current account in two years. By how much did net secondary income change from year 1 to year 2?
- Adecreased by $\$10\text{m}$
- Bdecreased by $\$20\text{m}$
- Cincreased by $\$20\text{m}$
- Dincreased by $\$30\text{m}$