An average consumer splits expenditure on food, clothing, accommodation and transport in the ratio 2 : 1 : 4 : 3. Over one year, the price of food decreases by 2%, the price of clothing rises by 4%, the price of accommodation rises by 10% and the price of transport stays unchanged. If the weights in a price index are based on the spending pattern of the average consumer, by how much does the index rise over the year?
- A2.5%
- B4%
- C10%
- D12%