International divergence in anti-terrorism financing legislation is a serious concern because:

a. many countries have enacted anti-terrorism financing laws that are Inconsistent with the U.N. Financing of Terrorism Convention

b. Effective enforcement of legislation against financing of terrorism requires significant amounts of international cooperation in matters such as the investigation of financial transactions and extradition of suspects

c. Interpol has a more difficult time reconciling the differences in various countries' laws

d. none of the above