If `secalpha, tanalpha` are roots of `ax^2 + bx + c = 0`, then

If `secalpha, tanalpha` are roots of `ax^2 + bx + c = 0`, then
A. `a^(2) - b^(2) + 2ac = 0`
B. `a^(3) + b^(3) + c^(3) - 2abc = 0`
C. `a^(4) + 4 ab^(2) c = b^(4)`
D. none of these

If `secalpha, tanalpha` are roots of `ax^2 + bx + c = 0`, then

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