I think its D but im not sure. please help

The school committee of a small town wants to determine the average number of children per household in their town. There are 50 households in the town. They divide the total number of children in the town by 50 and determine that the average number of children per household is 2.2. Which of the following must be true? (\"I Half of the households in the town have more than 2 children. (\"I There are a total of 110 children in the town. (\"I The most common number of children in a household is 2.2. 0 None of the other statements is true