Joy Needs to Clean the House Before Her Parents Come $v_{t}=\{10,0,0\}$

Joy needs to clean the house before her parents come on Sunday. Today is Friday. This means Joy can clean either Friday, Saturday or Sunday. The reward for cleaning the house is that Joy gets to enjoy a clean home, but the cost is that she will have to give up planned activities with her friends. Let $v_{t}=\{10,0,0\}$ be the reward for cleaning the house on Friday, Saturday, Sunday, respectively. Let $c_{t}=\{0,2,1\}$ be the cost of cleaning the house on Friday, Saturday, Sunday, respectively. The Dominance Property requires Joy to clean the house on which day?