A customer recently installed an updated version of a piece of software and now they are reporting that when they open a file from their desktop that uses the software the old version opens. Which of the following would resolve this issue with the LEAST amount of effort?

A.
Change the file association for that extension

B.
Reinstall old version of software

C.
Instruct customer to open the new version and use the open menu to open files

D.
Reinstall the updated version of software