Coolest doubt in Mahabharata... good one

Coolest doubt in Mahabharata
In some remote village of India, one masterji is teaching the Mahabharata
Story to class 6 students.
He is at the 'Krishna janma' part of it.
Masterji: "Kansa heard the Aakaashwani that his sister's 8th child is
going to kill him.
He was furious. He ordered to put vasudev n devki behind the bars.
First Son is born, and kansa kills him by poisoning...
Second one is born n kansa throws him off the mountain peak.
Third one is born ......
Now Ramu, who is smartest of the lot, puts up his hand.
"Masterji, I have a doubt" (sounding nervous n confused)
Masterji: "Ramu beta, whole India does not have doubt in Mahabharata
Then how come u have one?"
Ramu: "Masterji, if Kansa knew that Devaki's 8th child was going to kill him,
WHY THE HELL DID HE PUT VASUDEV AND DEVAKI IN THE SAME CELL? "
Masterji fainted..... ......... ........... ... sochana padega

:):)