If you observed two female redback spiders,one having 10 offspring and the other 50,what could explain the difference?

A) The female with more offspring ate her mate and was therefore better nourished.
B) The female with fewer offspring has a virus.
C) The female with more offspring has more estrogen.
D) The female with fewer offspring received more sperm from fewer males.
E) The female with more offspring is a better hunter.