Absolutely B, we can check that by doing a terraform apply without init:
terraform apply
╷
│ Error: Required plugins are not installed
│
│ The installed provider plugins are not consistent with the packages selected in the dependency lock file:
│ - registry.terraform.io/hashicorp/google: there is no package for registry.terraform.io/hashicorp/google 4.17.0 cached in .terraform/providers
│ - registry.terraform.io/hashicorp/local: there is no package for registry.terraform.io/hashicorp/local 2.2.2 cached in .terraform/providers
│
│ Terraform uses external plugins to integrate with a variety of different infrastructure services. To download the plugins required for this configuration, run:
│ terraform init

the question is unclear again,
yes you need to login in to terraform,
but this should be the basic of basic. just like when people ask you what you should do when you first wake up, the answer should not be "i open my eye first".
answer should be "B", terraform init, to install necessary plugins first.

Answer should be B.

Terraform needs to install the necessary plugins first by running terraform init.