According to Dell's Theory of Speech Errors

According to Dell's theory of speech errors,

A) slip-of-the-tongue occur because each sound can be activated by several different words.
B) slip-of-the-tongue tend to involve words from different syntactic categories.
C) slip-of-the-tongue occur because people focus too closely on the pragmatics of language.
D) slip-of-the-tongue occur because we pay too much attention to word choice.