Problem:

Question: The advantage of performing a bulked segregant analysis as the first step of a map-based cloning project is that...

a. it allows you to save time by genotyping a single pooled sample instead of lots of individual samples.

b. it gives you more power to map at a finer scale by genotyping a single pooled sample instead of lots of individual samples.

c. it allows you to identify the specific DNA substitution responsible for a mutant phenotype by genotyping a single pooled sample instead of lots of individual samples.

d. All of the above

Please provide correct answer.