After Manually Compiling and Installing a New Kernel, What Has

After manually compiling and installing a new kernel, what has to be done regarding the initramfs?

A) To initramfs is independent of the kernel and should not be modified unless the hardware configuration of the machine has changed
B) Since the initramfs contains kernel modules, a new initramfs must be built for the new kernel
C) During the compilation of the Linux kernel, a new initramfs is built automatically. The new initramfs only needs to be installed
D) The system should be restarted since the initramfs reconfigures itself for the new kernel during the startup of the system