In the Drosophila Melanogaster Compound Eye

In the Drosophila melanogaster compound eye:

A) photoreceptors R1-R6 carry information about motion directly to the medulla.
B) photoreceptors R7 and R8 form synaptic connections in the lamina.
C) all ommatidia lacking R8 cells will also lack R7 cells.
D) all ommatidia lacking R7 cells will also lack R8 cells.
E) all ommatidia lacking R7 cells will be unable to detect blue/green light.