To give an affirmative tú command, _____.

A) use a conjugation that looks the same as the regular past-tense form we use for él, ella, and usted.
B) use a conjugation that looks the same as the regular present-tense form we use for usted only.
C) use a conjugation that looks the same as the regular past-tense form we use for usted only.
D) use a conjugation that looks the same as the regular present-tense form we use for él, ella, and usted.