Find the mode(s) of the following data set, which represents the results of a survey of 50 people that recorded preference of beverages at a party. Select all that apply. | Beverage Preference | Coffee | Milk | Tea | Other |

Number of People | 5 | 15 | 20 | 10 |

Select all that apply: (a) Coffee (b) Milk (c) Tea (d) Other