Is the Following Statement True or False? If False, Identify

Is the following statement true or false? If false, identify the part of the statement that causes it to be false.
Kappa and lambda light chains differ in the amino-acid sequence of their constant regions.A given antibody always has two identical kappa light chains or two identical lambda light chains.An antibody molecule can never have both a kappa and a lambda chain.

A) true
B) false, light chains have the same amino-acid sequence in their constant regions
C) false, a given antibody can have different kappa or lambda light chains in the same molecule
D) false, an antibody can have both a kappa and lambda light chain in the same molecule