From https://trailhead.salesforce.com/content/learn/modules/lex_implementation_data_management/lex_implementation_data_import, looks like data loader is defined as a client application, but the import wizard is a tool accessible from Setup Menu. Doesn't seem to be defined as a client application. I think D is wrong. A&B are correct.
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ApexMike
Highly Voted 1 year, 4 months agosmoota
1 year, 1 month agobriccoli11
7 months, 3 weeks agoSanjeevOnForce
Most Recent 3 months, 3 weeks ago