Tracy consumes dress shoes (D) and casual Crocs (C). Her marginal utility from consuming casual Crocs is MUc = 20DC and her marginal utility from consuming dress shoes is MUD = 10C. Her annual shoe allowance is $360, which she spends on only dress shoes and Crocs. If she pays $40 for a pair of dress shoes and $40 for a pair of Crocs, what is her optimal consumption bundle? Tracy's satisfaction-maximizing bundle contains pairs of Crocs and pairs of dress shoes. (Enter your responses using integers.)