单选题
CPI data for a recent 12-month period:
The annual inflation rate as measured by CPI was closest to:
| category | percent of index | current price level | year-ago price level |
| commodities | 70 | 140 | 145 |
| services | 30 | 80 | 76 |
【正确答案】
B
【答案解析】[解析]
年度通货膨胀率=
年度通货膨胀率=