Let (G, 0) be a group and x E G. Suppose H is a subgroup of G that contains x. Which of the following must H also contain? CALL "powers" x0x, x0x 0x,... OThe identity element e of G All elements xyfory EG Ox, the inverse of x Enter the smallest subgroup of Z13* containing the element [9]13, as a set. Write each congruence class in the form [b]13 where 0≤b< 13.

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