Find the focus and directrix of the parabola with the given equation.y2 = -28x
A. focus: (7, 0)
directrix: x = -7
B. focus: (0, -7)
directrix: y = 7
C. focus: (-7, 0)
directrix: x = 7
D. focus: (-7, 0)
directrix: y = 7
Answer: C
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