The table shows a country’s national income across six years: year1 2100, year2 2110, year3 2125, year4 2135, year5 2140, year6 2135. Using the accelerator principle, in which year did net investment first drop to a lower level than in the preceding year?
- Ayear 3
- Byear 4
- Cyear 5
- Dyear 6