What should a consultant recommend to meet this requirement?

Universal Containers uses a custom object named “Analysis”, which is the child in a master-detail relationship with the Opportunity object. Sales teams use this object to create requests for supporting research. Sales teams use the Salesforce Mobile App and want to easily create new Analysis records from their phones.

What should a consultant recommend to meet this requirement?
A . Create a custom object tab.
B . Create an Action.
C . Create a Visualforce page.
D . Create a related list button.

Answer: A