Which AMPscript Syntax would populate the first name personalization as requested?

A developer wants to personalize a welcome email with the recipient’s first name from the Customers data extension, which is different from the targeted sending data extension named NewSubscribers. Both data extensions contain the unique identifier in a field named CustomerKey .

Which AMPscript Syntax would populate the first name personalization as requested?
A . %%=Lookup(‘Customers’, ‘FirstName’, ‘ContactID’, CustomerKey)=%%
B. %%=Lookup(‘Customers’, ‘FirstName’, ‘CustomerKey’, CustomerKey)=%%
C. %%=Lookup(‘Customers’,’FirstName’,’CustomerKey’, ‘CustomerKey’)=%%
D. %%=Lookup(‘NewSubscribers’,’FirstName’,’ContactID’,CustomerKey)=%%

View Answer

Answer: B