If understanding a word always involves knowing its dictionary definition, then understanding a word requires understanding the words that occur in that definition. But clearly there are people -- for example, all babies -- who do not know the dictionary definitions of some of the words they utter. Which one of the following statements follows logically from the statements above?
A: If it is possible to understand a word without knowing its dictionary definition, then it is possible to understand a word without having to understand any other word.
B: If some words can be understood without knowing their dictionary definitions, then babies understand some words.
C: Any number of people can understand some words without knowing their dictionary definitions.
D: If some babies understand all the words they utter, then understanding a word does not always involve knowing its dictionary definition.
Choose A, B, C or D as your solution.
D