Which one is correct?

The right one is more correct

C. All of the above

->

stop I can only get so hard aughhh

Right

Well, when the artist added the rest of the cetacean they drew ribs on the chest but not the arm. So I'm gonna guess the bit above the water with ribs is the chest and not the arm. I don't even need to draw on my vast knowledge of anatomy for that bit.

Both. Both are good.

Sexy and educational

Rule

All and others not written down here

The top one