What is the role of the `<OOV>` token?
Answer options
A
Placeholder for numbers
B
Ignore out-of-vocabulary words
C
Regular expression matcher
D
Delete out-of-vocabulary words
E
Placeholder for out-of-vocabulary words
Correct answer: Placeholder for out-of-vocabulary words
Explanation
The source marks the correct answer as: Placeholder for out-of-vocabulary words.