Which code segment should you use?

You develop an HTML5 webpage that contains the following HTML markup:

Users must receive a message after they click the Submit button if the text entered into the
favoriteColor text box is fewer than 2 characters or greater than 10 characters.
You need to implement the testLength() function.
Which code segment should you use?

A.
Option A

B.
Option B

C.
Option C

D.
Option D