Case 13-2 Judy Has Begun to Apply the Basic Information That You

Multiple Choice

Case 13-2
Judy has begun to apply the basic information that you have given her about schemas, and she would now like your help in mastering the details of how schemas work.

-In her definition of the recipe element, Judy would like to reference the existing definition of the ingredient element.Which of the following element declarations accomplishes this?

A) <xs:element id="ingredient" />
B) <xs:element idref="ingredient" />
C) <xs:element name="ingredient" ref= "existing" />
D) <xs:element ref="ingredient" />