Considering verb forms in the text, its correct to say:...

A “infringe” (l. 27) is in the Infinitive form. B “they’ve vowed” (l. 26) describes an action dissociated from the present time. C “says” (l. 21) refers to an action completed in the past. D “would appear” (l. 14-15) refers to a possible situation in the future. E “sold” (l. 9) is in the Simple Past tense.