Refer to the Figure Shown

Refer to the figure shown.
What is the best explanation for why mammalian and fish LDH-C enzymes are shown to be so distantly related?

A) Many separate gene duplication events created the C version of LDH.
B) The tree is based on LDH-A relationships, so it does not accurately show how closely related the LHD-C versions are to one another.
C) The enzymes were named before the actual evolutionary relationships were known.
D) The tree is separated based on animal phyla, not LDH.