You are a professional level SQL Server 2005 database administrator in an international corporation named Wiikigo. You are experienced in implementing high-availability solutions, monitoring the database server, and design deployment. In the company, you major job is the deployment, maintenance and support of Microsoft SQL Server 2005. You work as a database administrator for a financial services company. Replication is configured between two SQL Server 2005 computers, and the servers are respectively named SQL1 and SQL2. Real-time transactional data is stored by the SQL1. 
A、A.Snapshot replication should be set on SQL1. And then SQL2 should be set as a standard subscriber for a standard subscription.
B、B.Transactional replication should be set on SQL1. And then, SQL2 should be set as a standard subscriber for a standard subscription.
C、C.Merge replication should be set on SQL1. And then SQL2 should be set as a standard subscriber for an updateable subscription.
D、D.Transactional replication should be set on SQL1. And then, SQL2 should be set as a standard subscriber for an updateable subscription.