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Answer: C) I and II only</h3>
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Work Shown:
Part I

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Part II

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Part III

The answer is B.
This is because <span>any angle formed by two chords is equal to half the sum of intercepted arcs.</span>
First thing we gotta do is find the unit rate:
800 divided by 2.5 = 320
And now your problem is complete! The unit rate or square foot per hour is 320 square feet per hour!
Hope this helps, if not, comment below please!!!
The answer is B because every number is adding up to 6