What is the output of this program?
#!/bin/bash
a=10; b=20
c=$((++a))
let a=c+a
echo $a
exit 0
a) 21
b) 22
c) program will generate an error message
d) none of the above
Submitted by: Murtazab) 22
Submitted by: Murtaza
Submitted by: Murtaza
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