Step 1:
Vaishnava Puranas mainly glorify Lord Vishnu and his incarnations.
Step 2:
Garuda Purana and Bhagavata Purana are strongly associated with Vishnu Bhagawan.
Step 3:
Shiva Purana is Shaiva in nature, while other texts have different orientations.
Step 4:
Hence, the correct option is:
\[
\boxed{\text{(1) A and B Only}}
\]