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Let f(x) ={{:((x-4)/(|x-4|)+a,xlt4),(a+b...

`Let f(x) ={{:((x-4)/(|x-4|)+a,xlt4),(a+b,x=4),( (x-4)/(|x-4|)+b, x gt4):}`
then f(x) is continuous at x=4 when

A

(0, 0)

B

(1, 1)

C

(-1, 1)

D

(1, -1)

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The correct Answer is:
D
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