Which of the following is false when it comes to DHCP Options Set?

Answer options:

A.You can modify the DHCP options set after they have been created.
B.You can have multiple sets of DHCP options
C.One DHCP options can be associated with one VPC at a time
D.If you delete a VPC, the DHCP options set associated with the VPC gets dis-associated from the VPC.

Answer – A
The AWS documentation mentions the following
After you create a set of DHCP options, you can`t modify them. If you want your VPC to use a different set of DHCP options, you must create a new set and associate them with your VPC. You can also set up your VPC to use no DHCP options at all.
You can have multiple sets of DHCP options, but you can associate only one set of DHCP options with a VPC at a time. If you delete a VPC, the DHCP options set associated with the VPC gets dis-associated from the VPC.For more information on DHCP Options Set, please refer to the below link:
https://docs.aws.amazon.com/vpc/latest/userguide/VPC_DHCP_Options.html
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_DHCP_Options.html