Which sentences in this excerpt from john barth's "lost in the funhouse" show the postmodern element of self-reflexivity?

1)en route to ocean city he sat in the back seat of the family car with his brother peter, age fifteen,

2)magda age fourteen, a pretty girl and exquisite young lady who lived not far from them on street

3)initials, blanks, or both were often substituted for proper names in nineteenth century fiction to enhance the illusion of reality.

4)interestingly, as with other aspects of realism, it is an illusion that is being enhanced, by purely artificial means.