The equation of the tangent to the hyperbola $4{y^2} = {x^2} - 1$ at the point $(1, 0)$ is
The equation of the tangent to the hyperbola $4{y^2} = {x^2} - 1$ at the point $(1, 0)$ is
- A
$x = 1$
- B
$y = 1$
- C
$y = 4$
- D
$x = 4$
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