Marketing Cloud Next currently supports three field data types for Marketing Objects: Text, Number, and Decimal .
Salesforce defines Text as a string value of up to 255 characters. Number stores positive or negative integers with up to 18 digits. Decimal stores positive or negative decimal numbers with up to 18 digits. These deliberately constrained field types make Marketing Objects suitable for lightweight campaign, lookup, promotional, localization, and personalization datasets.
Option B is incorrect because Formula isn't listed as a Marketing Object field type. Calculated logic can be handled through other platform capabilities, but formula isn't one of the three selectable types when defining a Marketing Object field.
Option C uses familiar programming terminology—String, Integer, Boolean—but those aren't the Marketing Cloud Next field labels and Boolean isn't currently one of the supported Marketing Object field types documented by Salesforce.
The uploaded master bank identifies option A. This item has direct current-documentation support: Salesforce's Marketing Object Data Types and Resource Allocations reference explicitly lists only Text, Number, and Decimal .
Study Guide Reference: Data Modeling, Identity Resolution and Segmentation → Marketing Objects → Supported Data Types and Resource Allocations.
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