The colon is partitioned into four segments: the ___ colon, ___ colon, descending colon, and sigmoid colon.
A. the proximal colon, middle colon, descending colon, and sigmoid colon.
B. the ascending colon, central colon, descending colon, and sigmoid colon.
C. the transverse colon, inferior colon, descending colon, and sigmoid colon.
