Explain the baptism of John (Mk 11:30-11:30)

“Did the baptism

Of John

Come from heaven?

Or was it

Of human origin?

‘Answer me!’”

 

τὸ βάπτισμα τὸ Ἰωάνου ἐξ οὐρανοῦ ἦν ἢ ἐξ ἀνθρώπων; ἀποκρίθητέ μοι.

 

This question about John the Baptist and the value of his baptism can be found in Matthew, chapter 21:25, and Luke, chapter 20:4, almost word for word.  Mark said that Jesus asked this one question.  Did the baptism of John the Baptist (τὸ βάπτισμα τὸ Ἰωάνου) come from heaven (ἐξ οὐρανοῦ ἦν) or was it of human man-made origin, from men (ἢ ἐξ ἀνθρώπων)?  He wanted an answer (ἀποκρίθητέ μοι).  This also seems fair enough.