Which command reduces the amount of time it takes to complete the ISSU on a Cisco Nexus 7000 Series Switch that has dual supervisor modules and two I/O modules?

Which command reduces the amount of time it takes to complete the ISSU on a Cisco Nexus 7000 Series Switch that has dual supervisor modules and two I/O modules?
A. insinstall all epld bootflash: parallel
B. install all kickstart system parallel
C. install all kickstart system
D. install all epld bootflash: