You are developing a customer contact form that will be displayed on a page of a company’s website. The page
collects information about the customer.
If a customer enters a value before submitting the form, it must be a valid email address.
You need to ensure that the data validation requirement is met.
What should you use?

A.
<input name=”email” type=”url”/>

B.
<input name=”email” type=”text” required=”required”/>

C.
<input name=”email” type=”text”/>

D.
<input name=”email” type=”email”/>

Explanation:
Example:
<form>
E-mail:
<input type=”email” name=”email”/>
</form>

http://www.w3schools.com/html/html5_form_input_types.asp