Match each example of a sanction to either formal or informal norms. Notice that both positive and negative sanctions are included.
(a) Positive sanction for wearing a school uniform
(b) Negative sanction for violating workplace dress code
(c) Positive sanction for volunteering at a local charity
(d) Negative sanction for not attending a family gathering

(1) Formal norms
(2) Informal norms
(3) Both formal and informal norms
(4) None of the above