$.$ In a mating between two individuals that are heterozygous for a recessive lethal allele that is expressed$$in utero, what genotypic ratio $($homozygous dominant:heterozygous:homozygous recessive$)$ would you expect to observe in the offspring?

a$.1$:$2$:$1$

b$.3$:$1$:$1$

c$.1$:$2$:$0$

d$.0$:$2$:$1$