The designation M 33 x 2 of a bolt means___________________?

The designation M 33 x 2 of a bolt means___________________?

A. metric threads of 33 nos in 2 cm.
B. metric threads with cross-section of 33 mm
C. metric threads of 33 mm outside diameter and 2 mm pitch
D. bolt of 33 mm nominal diameter having 2 threads per cm
E. none of the above