Different Species of Fig Wasps Specialize in Pollinating Specific Species

Different species of fig wasps specialize in pollinating specific species of fig. Their mutualism is obligatory. What is the potential problem with this strategy?

A) There aren't enough species of fig wasps to go around, so not every fig gets pollinated.
B) There aren't enough species of figs to go around, so not every wasp gets food and a place to live.
C) Wasps both eat from and live in the figs, so once one wasp moves in, no further pollination can occur.
D) If "your" wasp, or "your" fig dies out, you die out, too.
E) There is no problem. It's a great strategy.