universal containers has implemented multi currency. There are several products that universal containers sells exclusively in europe and the UK. Opportunities for these products need to be written in euros or british pounds. Which solution should an app builder recommend ?

Cloud Kicks received a new requirement to calculate summaries from child objects of a standard object. The team would prefer to solve this declaratively.
What are two considerations an app builder should evaluate?
Choose 2 answers

Ursa Major Solar has a lookup relationship between a custom Galaxy _c object and a custom Star_c object. An app builder wants to create a roll-up summary field that counts the total number of Star_c records related to each Galaxy__c record.
How would the current configuration impact the ability to achieve the desired result?

The customer service team at Universal containers uses a custom Project object to track their customer projects. An App builder needs to create a relationship between the project object and the related client Account record. A private sharing model is in place for both Accounts and projects. Which statement is true when creating an Account lookup field on the Project object? Choose 2 answers

An app builder has been asked to provide users a way to identify a contact's "preferred contact method" directly on the contact record. users need to be able to identify whether a phone number or an email, is the contact's preferred communication method. Which field type will allow the app builder to accomplish this with the fewest fields possible?