A) A-Phloem, B-Sugar leaves sieve tube, C-Sugar enters sieve tube
B) A-Xylem, B-Sugars leaves sieve tube, C-Sugar enters sieve tube
C) A-Phloem, B-Sugar enters sieve tube, C-Sugars leaves sieve tube
D) A-Xylem, B-Sugar enters sieve tube, C-Sugars leaves sieve tube