The INV_HISTORY table is created using the command：  
SQL>CREATE TABLE INV_HISTORY （inv_no NUMBER（3）， inv_date DATE， inv_amt NUMBER（10，2）） partition by range （inv_date） interval （numtoyminterval（1，’month’）） （partition p0 
values less than （to_date（’01-01-2005’，’dd-mm-yyyy’））， partition p1 values less than （to_date（’01-01-2006’，’dd-mm-yyyy’）））；  
The following data has been inserted into the INV_HISTORY table ：  
INV_NO INV_DATE INV_AMT 1 30-dec-2004 1000 2 30-dec-2005 2000 3 1-feb-2006 3000 4 1-mar-2006 4000 5 1-apr-2006 5000  
You would like to store the data belonging to the year 2006 in a single partition and issue the command：  
SQL> ALTER TABLE inv_history MERGE PARTITIONS 
FOR（TO_DATE（’15-feb-2006’，’dd-mon-yyyy’））， FOR（TO_DATE（’15-apr-2006’）） INTO PARTITION sys_py； 
What would be the outcome of this command？（）

A. It executes successfully，and the transition point is set to ’1-apr-2006’.
B. It executes successfully，and the transition point is set to ’15-apr-2006’.
C. It produces an error because the partitions specified for merging are not adjacent.
D. It produces an error because the date values specified in the merge do not match the date values stored in the table.