You've got IO subsystem problems on ServerA. Do some diagnostics, check storage logs and consider moving the DB to alternate storage.
Corruption can't be replicated (or mirrored), so bad pages on subscriber cannot be caused by problems at the publisher.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability