Which two statements are true regarding the SGA_TARGET initialization parameter（）
A. It can be increased up to the value of the SGA_MAX_SIZE parameter.
B. Increasing the value of the SGA_TARGET parameter distributes the increased memory among all the Autotuned components.
C. Reducing the value of the SGA_TARGET parameter deallocates memory from both autotuned and Manually sized components.
D. Increasing the value of SGA_TARGET up to the value of SGA_MAX_SIZE disables the automatic shared Memory management feature.
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