In One State, the Legal Age for an Individual to Get

In one state, the legal age for an individual to get married is fourteen. In another state, the age is sixteen. Both of these states are essentially setting a specific age as to when one is mature enough to marry and saying it is morally and ethically right at the allowed age. Each of these states has the right to have different legal ages for marriage. This norm is an example of which one of the following choices?

A) hypernorms
B) macro-social contract
C) micro-social contract
D) meso-social contract