How does the client update Net Zero Cloud each time a new update is released? (1)

How does the client update Net Zero Cloud each time a new update is released? (1)
A . Press the commit button to update
B. Search for the AppExchange listing and click update now
C. Find the install link in the Partner Community
D. The email contains a link to the same private AppExchange page that was used to install the app originally

Answer: B