Would There Be Any Disadvantage of Sex If Sexual Reproduction

Would there be any disadvantage of sex if sexual reproduction was isogamous?

A) No, females would not pay the twofold cost of sex.
B) Yes, sex may break up coadapted gene complexes.
C) No, females would still transmit the same proportion of their genes to the next generation.
D) Yes, despite contributing the same proportion of offspring as asexual females, isogamous sexual females would only transmit half the proportion of their genes to the next generation.