The vascular bundlies in the stems of several dicots are conjoint, collateral, and open. In each of these bundles,
A. Xylem and phloem are on the same radius with phloem towards the pith and xylem towards the pericycle without a strip of cambium between them
B. Xylem and phloem are on the same radius with xylem towards the pith and phloem towards the pericycle and a strip of combium separtes the two
C. Xylem completely surroundds the phloem on all sides but the two are separted by the cambium
D. Phloem completely surrounds the xylem and a strip of combium separtes the two
