William Bateson and Reginald Punnett were not able to detect genetic linkage in sweet peas. Which of the following explains why Thomas Morgan was able to detect autosomal genetic linkage?

A) He performed Lod score analysis to determine the distance between the genes he was studying.
B) He crossed two heterozygous individuals and was able to determine offspring genotypes from their phenotypes.
C) He crossed a heterozygous individual with a homozygous recessive individual and was able to determine progeny genotypes from their phenotypes.
D) He sequenced the DNA and was able to determine the distance between the genes.
E) He performed a three- point test cross.