For the following rational function, identify the coordinates of all removable discontinuities and sketch the graph. Identify all intercepts and find the equations of all asymptotes.f(x) = 
A. no removable discontinuities;
no x-intercept, no y-intercept;
asymptotes x = 1, x = 2, y = 0
B. removable discontinuity at (-2, -1);
no x-intercept, y-intercept: 
;
asymptotes x = - 1, y = 0
C. no removable discontinuities;
no x-intercept, no y-intercept;
asymptotes x = - 1, x = -2, y = 0
D. removable discontinuity at (2, 1);
no x-intercept, y-intercept: 
;
asymptotes x = 1, y = 0
Answer: D
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D. 
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B. 
C. 
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