In order for the following line of code to work: bowtie -x ${REF}_index -U $READ > $READ.sam,
Question 5Select one:
a.
The program "bowtie" needs to be installed
b.
The variable $REF needs to be defined
c.
The variable $READ needs to be defined
d.
A bowtie index needs to be created
e.
All of the above are true