What is the value of the discriminant, b^2 - 4ac, for the quadratic equation 0 = x^2 - 4x + 5, and what does it mean about the number of real solutions?

1- the discriminant is -4, so the equation has 2 real solutions.

2- the discriminant is -4, so the equation has no real solutions.

3- the discriminant is 35, so the equation has 2 real solutions.

4- the discriminant is 35, so the equation has no real solutions.

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