SPOILER!!! Ash, Bishop, Call...?

POSSIBLE SPOILER!!! The synthetics from the main Alien series were named (in order of appearance) Ash, Bishop and Call. The initials, of course, spell out A, B and C. We now know that there is a synthetic character featured in Prometheus as well and his name is David. So now we have A, B, C...and D? Coincidence? Homage? What do you guys think?