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Verbal·Standard English Conventions·Boundaries

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The furnaces used in ancient China to produce glazed tiles reached heights of 150 feet and diameters of 24 feet. These massive structures were used to heat clay mixtures to temperatures of up to 230 degrees __________ such intense heat produced chemical effects that couldn’t occur with air-dried materials.

Which choice completes the text so that it conforms to the conventions of Standard English?

A

Celsius,

B

Celsius and

C

Celsius;

D

Celsius