Tim, a technician, creates a local variable named val and sets it to $5000$ at the bash prompt. Tim wants to use the variable in a script. But when the script is executed, the value of val is not set to $5000.$

Which of the following commands would allow Tim to set val as an environment variable that would be available to the script?

answer

export val$=5000$

exec val

echo $val$=5000$

declare val