Which answer is TRUE for Category III codes?

$1)$You can use Category III code or unlisted code in Category I for procedures in this section

$2)$Category III codes are emerging technology and will be entered into Category I of CPT within $5$ years of the date published in Category III.

$3)$New$,$ revised, and deleted codes in Category III are released semi$-$annually vis AMA CPT website.

$4)$Codes in section of Category III may or may not eventually receive a Category I CPT code?