Explanation:

XHTML is a stricter, XML-based version of HTML 4.01.

• Since XHTML follows XML rules, it can be mixed with HTML 4.01, but only under certain conditions.
• If the document follows HTML 4.01 standards, it should use text/html as its MIME type.
• If the document follows XHTML standards, it should use application/xhtml+xml as its MIME type.

Intermixing Conditions:

• If an HTML 4.01 document contains XHTML content, it must be properly closed and well-formed.
• Many modern browsers support mixing XHTML inside HTML documents.
• However, the reverse (HTML inside strict XHTML) might not always work.

Thus, the statement "We can intermix XHTML and HTML 4.01 documents" is True but with certain restrictions.