In the study of modal auxiliaries and verbal phrases in English, it is essential to understand how they modify the verbs they are associated with, expressing modality, aspect, voice, or tense. Thus, evaluate the propositions:
I.The modal "can" is used to express permission, but not ability.
II.The verbal phrase "have been writing" expresses a continuous action from the past up to the present.
III."Will" is used exclusively to express planned decisions in the future.
Mark the correct alternative: