Dell EMC s4128f-on negotiation configureation (os10.5.3)

Hi, I have a question about negotiation configuration on s4128f-on(os 10.5.3).

I read this guide, but It's not resolved
https://www.dell.com/support/manuals/en-us/dell-emc-smartfabric-os10/smartfabric-os-user-guide-10-5-3/configure-negotiation-modes-on-interfaces?guid=guid-016a100c-e27c-4204-86c8-df505048fe5b&lang=en-us

What is the difference between A, B and C ?

All three settings show the same output.

)#do show interface ethernet 1/1/10 | grep Nego
...
LineSpeed 0, Auto-Negotiation off

-----------------------------------------------------------------------

<A>

OS10-upgrade(config)# 
OS10-upgrade(config)# interface ethernet 1/1/10
OS10-upgrade(conf-if-eth1/1/10)# show configuration
!
interface ethernet1/1/10
 no shutdown
 switchport access vlan 1
 flowcontrol receive on
!
OS10-upgrade(conf-if-eth1/1/10)# do show interface ethernet 1/1/10 | grep Nego
...  
LineSpeed 0, Auto-Negotiation off
...

<B>
OS10-upgrade(conf-if-eth1/1/10)# negotiation on
OS10-upgrade(conf-if-eth1/1/10)# show configuration
!
interface ethernet1/1/10
 no shutdown
 switchport access vlan 1
 negotiation on
 flowcontrol receive on

OS10-upgrade(conf-if-eth1/1/10)# do show interface ethernet 1/1/10 | grep Nego
...
LineSpeed 0, Auto-Negotiation off
...

<C>
OS10-upgrade(conf-if-eth1/1/10)# negotiation off
OS10-upgrade(conf-if-eth1/1/10)# show configuration
!
interface ethernet1/1/10
 no shutdown
 switchport access vlan 1
 negotiation off
 flowcontrol receive on
!

OS10-upgrade(conf-if-eth1/1/10)# do show interface ethernet 1/1/10 | grep Nego
...
LineSpeed 0, Auto-Negotiation off
...