For machining the circular arc shown in the figure below

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For machining the circular arc shown in the figure below on a NC machining, the interpolation parameters (I, K) and the incremental movements in the direction of the X and Z axes are programmed as

1. I = 0, K = R, X = -(R–P), Z = –0
2. I = R, K = 0, X = -(R–P), Z = –Q
3. I = P, K= Q, X= R, Z= R–Q
4. I = Q, K = P, X = (R-P), Z= R

Correct Option: B

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