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Q.) Let y = f(x) be a parabola, having its axis parallel to y-axis, which is touched by the line y = x at x = 1, then
[A]2f(0) = 1-f'(0)
[B]f'(0) + f(0) + f''(0) = 1
[C]f'(1) = 1
[D]f'(0) = f'(1)