Consider the following statements about the word “can” in the sentence “Video can explain steps more naturally” (l. 13) in the context presented in the article:
I. Its past form is “could”. II. It could be replaced by “must” with no significative changes in meaning. III. It expresses permission.
Which statements are correct?
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A Only I.
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B Only II.
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C Only III.
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D Only I and II.
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E Only I and III.