If we type a word repeatedly in MS Office Document. What will be happened?

A: Nothing will be happened
B: It will underline repeated words with Green line
C: It will underline repeated words with Red line
D: It will remove duplicated words
Correct Answer: c
Short Details:
Grammar mistakes are underlined in MS Office with Green colour.
Spelling mistakes are underlined in MS Office with Red colour.
The shortcut key to check spelling is F7.