Which code sample will skip running the login_required "before" filter on the get_posts controller action?
a. before_action :login_required, skip: [:get_posts]
b. skip_before_action :login_required, except: [:get_posts]
c. skip_before_action :login_required, only: [:get_posts]
d. skip_action before: :login_required, only: [:get_posts]
