You are developing a customer web form that includes the following HTML.

<input id=”txtValue” type=”text”/>

A customer must enter a valid age in the text box prior to submitting the form.

You need to add validation to the control.

Which code segment should you use?

A. Option A

B. Option B

C. Option C

D. Option D

Explanation:

val

Returnvalue

A string containing the value of the element, or an array of strings if the element can have multiple values