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. And SQL2 is utilized for reporting. The data on SQL01 should not be changed by SQL2. The publication contains a large amount of data. Since you are the database administrator， you need to make sure that data is replicated from SQL1 to SQL2 in as near real-time as possible to confirm accurate reporting during replication. In addition， you need to make sure that this data is replicated securely. Which action should be performed？（）

A. Snapshot replication should be set on SQL1. And then SQL2 should be set as a standard subscriber for a standard subscription.
B. Transactional replication should be set on SQL1. And then， SQL2 should be set as a standard subscriber for a standard subscription.
C. Merge replication should be set on SQL1. And then SQL2 should be set as a standard subscriber for an updateable subscription.
D. Transactional replication should be set on SQL1. And then， SQL2 should be set as a standard subscriber for an updateable subscription.