I want to do a 3 point mapping experiment in grain.

I want to do a 3 point mapping experiment in grain. The three genes are
autosomal, and the mutant traits are all homozygous recessive. My three genes are:
Apple (ap)
Bacon (ba)
Cheddar (ch)
A female plant is heterozygous for all three traits, and she is crossed with a male that is
homozygous recessive for all three traits. The results of the cross are as follows:
Mutant Phenotypes and Number Observed
Wildtype 56
Apple 10
Cheddar 96
Bacon 340
Apple, cheddar 332
Apple, bacon 102
Cheddar, bacon 12
Apple, bacon, cheddar 52
a) Given the results of the cross, what gene is in the middle?
b) What are the map distances between each gene? Please be specific which genes
the distances correspond to
c) What is the interference?