Organize the following polynomial expressions from least to greatest based on their degree:
I x + 2xyz
II 3x + y + z
III 2x3y + y2x - 3x + 4
IV 9x3yz
A II, III, I, IV
B III, I, IV, II
C I, II, IV, III
D II, I, III, IV
I x + 2xyz
II 3x + y + z
III 2x3y + y2x - 3x + 4
IV 9x3yz
A II, III, I, IV
B III, I, IV, II
C I, II, IV, III
D II, I, III, IV