Explanation

The correct choice "A) In tials" appears to be a typographical error for the phrase "In initials". The context of the original question discusses well-known men who are often referred to by shortened forms of their names. The term "initials" refers to the first letters of the first and last names that can serve as a shorthand reference for a personsuch as "J.F.K." for John F. Kennedy. This is a common practice in naming conventions, especially for public figures and celebrities.

The other options do not fit the context appropriately. "Signatures" refers to an individual's handwritten name, while "Middle name" refers to an additional name that does not typically serve as a shorthand reference. The phrase "No correction required" suggests that the original statement is correct as it is, which is not accurate due to the error in "in tials". Thus, "In initials" accurately captures the intended meaning, making option A the appropriate choice.