Normalization in the SAP BW does the following:

A$.$

Increases data redundancy, decreases storage space, decreases number of joins

B$.$

Reduces data redundancy, decreases storage space, decreases number of joins

C$.$

Increases data redundancy, decreases storage space, increases number of joins

D$.$

Reduces data redundancy, reduces storage space, increases number of joins

E$.$

Reduces data redundancy, increases storage space, decreases number of joins