i need the answer and process thanks.

Question 1(4marks) Suppose that your demand schedule for CD is as follows:" Price Quantity demand (income=$10 000) Quantity demand (income=$12 000) $8 40 50 10 32 45 12 24 30 14 16 20 16 8 12 a)Calculate your price elasticity of demand as the price of CD increases from $8 to $10 if i) your income is $10 000 and il) your income is $12 000.(2marks)"