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If `p, q, r, s in R`, then equaton `(x^2 + px + 3q) (-x^2 + rx + q) (-x^2 + sx-2q) = 0` has

A

6 real roots

B

at least two real roots

C

2 real and 4 imaginary roots

D

4 real and 2 imaginary roots

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The correct Answer is:
B
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