What is a valid way of referencing the CC Cart Object whose API name is E_Cart__c in a SOQL query?

What is a valid way of referencing the CC Cart Object whose API name is E_Cart__c in a SOQL query?
A . _Cart__c
B . c.E_Cart__c
C . ccrz__E_Cart__c
D . cloudcraze__E_Cart__c

View Answer

Answer: C