Which of the following about the passive voice is true?
A．The passive voice in English is formed periphrastically: the usual form uses the auxiliary verb be (or get) together with the past participle of the main verb.
B．“Be given” is a passive voice structure.
C．The subject of a sentence or clause featuring the passive voice typically denotes the recipient of the action (the patient) rather than the performer (the agent).
D．The passive voice is a grammatical construction.