Which of the following commands creates a function in Bash that outputs the sum of two numbers?

Which of the following commands creates a function in Bash that outputs the sum of two numbers?
A . function sumitup {echo $(($1 + $2)) ;}
B . command sumitup {echo $(($1 + $2)) ;}
C . function sumitup {echo $1 + $2 ;}
D . method sumitup {echo $1 + $2 ;}
E . command sumitup {echo $1 + $2 ;}

View Answer

Answer: A