Price elasticity of demand — practice question

The table presents a consumer’s spending on a variety of goods at different income levels. For which good does the consumer have an income elasticity of demand above zero, but below one?

• AGood A: expenditure 10, 18, 40 at incomes 40,50,100
• BGood B: expenditure 10, 11, 20 at incomes 40,50,100
• CGood C: expenditure 10, 10, 10 at incomes 40,50,100
• DGood D: expenditure 10, 8, 6 at incomes 40,50,100