The graph below shows Bob's indifference curves between goods X and Y. Assume the price of Good Y drops, and Bob is currently on the lower indifference curve. What can you say about Bob's optimal purchase?

Bob will purchase more Y and less X.

Unable to determine

Bob will purchase less of Goods Y and X.

Bob will purchase more X and less Y.

Bob will purchase more of Goods Y and X

Good Y Good X