In circle P, the two chords intersect at point X...

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In circle P, the two chords intersect at point X, with the lenghts as indicated in the figure. Which could not be the sum of lengths a and b, if a and b are integers?

A. 49
B. 30
C. 26
D. 16
E. 14

The OA is B.

I don't have clear this PS question, I appreciate if any expert explain it for me. Thank you so much.

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