For What Reason Has the American Society for Reproductive Medicine

For what reason has the American Society for Reproductive Medicine created guidelines to help reduce the number of multiples born as a result of IUI and IVF?

A) Multiples are often plagued with health problems.
B) Multiple births are often advantageous to the mother.
C) Twins and quadruplets are often healthier than single births.
D) Parents of multiples are less likely to want more children.