Which of the following actions will enable 64-bit applications on a system with a 32-bit kernel？（）

A.change the kernel to 64bit， reboot， and then use the following command：chdev -l sys0 -a applications=64_bit
B.Re-install the OS with 64-bit kernel enabled
C.Re-install all applications with 64-bit versions
D.Use smit to enable the 64-bit applications