What is the advantage of using XML?

XML can describe structured data independently of the software or system used, allowing for interoperability between heterogeneous systems.
XML can only be used for data exchange between similar systems.
XML has a rigid syntax that makes it difficult to use in different applications.
XML cannot be used to represent electronic documents.
a) Only statement I is correct.
b) Statements I and II are correct.
c) Statement I is correct and statements III and IV are incorrect.
d) Statement I is correct and statements II, III and IV are incorrect.