You are configuring a laptop and need to configure Ethernet interface eth0 with the following configuration:

Element Configuration
Ethernet Interface eth0
IP Address
Subnet Mask

Fill in the blank with the full command string to configure Ethernet interface eth0 with the given IP Address and Subnet Mask.
a) ifconfig eth0 [IP_Address] netmask [Subnet_Mask]
b) ipconfig eth0 [IP_Address] subnet [Subnet_Mask]
c) ifconfig eth0 [IP_Address]/[Subnet_Mask]
d) configure eth0 [IP_Address] mask [Subnet_Mask]