A would have been the answer provided a=c not equal to zero

since, no condition is given hence, we cant its A.

and by using both statement together also we cant say whether it will cross or not.

if constants are not equal to zero, then the curve will cross each other.

if constants(a&C) are zero, then it is line with different value. wont cross each other.

and if, constant (all) are zero they will over lap.

so, the best answer is E.

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