Which of the following are functions? {{CMD_38}} {{CMD_39}}Mapping words to their definition in a dictionary.{{CMD_40}} {{CMD_41}}Given an object traveling through space, mapping time to the position of the object in space.{{CMD_42}} {{CMD_43}}Mapping people to their birth date.{{CMD_44}} {{CMD_45}}Mapping mothers to their children.{{CMD_46}} {{CMD_47}} {{CMD_48}}{{CMD_49}} {{CMD_50}} {{CMD_51}} Since words may have more than one definition, ``relating words to their definition in a dictionary'' is not a function. {{CMD_52}} Since for any given time, objects cannot be ``two places at once,'' this is a function. {{CMD_53}} Since every person only has one birth date, ``relating people to their birth date'' is a function. {{CMD_54}} Since mothers can have more (or less) than one child, ``relating mothers to their children'' is not a function. {{CMD_55}} {{CMD_56}} {{CMD_57}}