Hi, I'm struggling with this question can u help please?

Suppose that the price of a given commodity 1 increases. Anna, who was buying a positive quantity of both x and y before tho price change. will adjust her optimal choice in response to the price change. In which of the following cases Anna will NOT consumer less ofgood 1 than before? Q a. When Anna's preferences are Cobb Douglas {fl b. When Anna's indilference mrves are strictly convex and her income is adjusted in order to allow her to buy exactly the same plan she was buying before the change {j c. When preferences are perfect complements and income is adjusted so to allow Anna to reach the exact level of utility she was reaching before the change Q d. When Anna's indilference moves are strictly convex and there is no adjustment in income {fl c. When indifference cines are strictly convex and Anna's income is adjusted in order to allow her to reach the exact level of utility as before the change