When a clock shows 4 o' clock how much a...

When a clock shows `4` o' clock how much angle do its minute and hour needles make?

A

real and distinct, if `D gt 0`

B

real and equal (repeated roots), if `D=0`

C

non-real (imaginary), if `D lt 0`

D

None of the above

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The correct Answer is:

A, B, C

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