A protein with molecular weight of 100 kD is subjected to SDS PAGE electrophoresis. The SDS PAGE electrophoresis pattern show two widely separated bands of 20kD and 30kD after addition of Mercaptoethanol. The true statement regarding this will be.
A
The protein has undergone complete lysis
B
The protein is a monomer of 20 kD and 30kD protein
C
The protein is a dimmer of two 20kD and 30kD proteins
D
The protein is a tetramer of 20kd and 30kD proteins