Humans Have Many Genes That Contribute to the Unique Array

Humans have many genes that contribute to the unique array of proteins found on their red blood cells. Your MN blood type (the letters indicate the presence of M and N proteins on the red blood cells) is determined by the codominant alleles Lᴹ and Lᴺ. Which of the following genotypes could be produced when a man with MN blood and a woman with MN blood mate?

A) LMLM
B) LMLN
C) LNLN
D) all of the above