In the figure above, two circles with radii equal to 10 units of length overlap such that their centres, $${O}_{1}$$ and $${O}_{2}$$, are 16 units apart. What is the distance between the line joining the centres of the circles and the line drawn through point P parallel to the line connecting the centres?
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A$$\frac{1}{32}$$
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B$$\frac{1}{4}$$
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C$$\frac{1}{2}$$
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D$$\frac{3}{4}$$
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E$$\frac{8}{9}$$
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正确答案: C