This answer would be false srry if im wrong but thats what i think
I believe the sum of the root is: -3/2
And the product of the root is: 0
I hope this helps and have a great week :)
Notice it is +/-4 times standard deviation (0.65-0.04 = 0.61, 0.69-0.04=0.65)
That's almost everything. So (D) is the answer.
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