Case-based Critical Thinking QuestionsCase 12-2Rosalind wants to add attribute declarations to her DTD, and she turns to you for information about the possible attribute types. Finally, you help Rosalind write the declaration of an attribute named "credits" of an element named "course." This optional attribute should contain character data, and a value of 4 should be used if an attribute value is not specified. Which of the following is an appropriate declaration of this attribute?
A.
B.
C.
D.
Answer: D
Computer Science & Information Technology
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Computer Science & Information Technology
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Computer Science & Information Technology
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Computer Science & Information Technology
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Computer Science & Information Technology