In the Fruit Fly,Drosophila Melanogaster,a Spineless No Wing Bristles Female

Multiple Choice

In the fruit fly,Drosophila melanogaster,a spineless no wing bristles female fly is mated to a male that is claret dark eyes and hairless no thoracic bristles .Phenotypically wild-type F₁ female progeny were mated to fully homozygous mutant males,and the following progeny 1000 total were observed:
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What are the map distances between hairless and spineless?

A) 50
B) 10
C) 40
D) 30
E) 45