The Figure Below Shows the Effect of an Antagonistic Pleiotropic

The figure below shows the effect of an antagonistic pleiotropic mutation (A) .What would be the effect of a mutation (B) that delayed the onset of reproduction without changing the survival curve?

A) Genotypes carrying A and B would have a higher fitness than genotypes carrying A without B.
B) Genotypes carrying A and B would have a lower fitness than genotypes carrying A without B.
C) B would not have any effect on the fitness of individuals with A.
D) We cannot determine the effect of B without the survival curve for individuals that are wild-type at the locus affected by A.