The correct option is A One veto can stall a Security Council resolution
The United Nations Security Council "power of veto" refers to the veto power wielded solely by the five permanent members of the United Nations Security Council (China, France, Russia, United Kingdom, and United States), enabling them to prevent the adoption of any "substantive" resolution. Abstention or absence from the vote by a permanent member does not prevent a draft resolution from being adopted. The permanent members can vote against a "procedural" draft resolution without blocking its adoption by the Council. A negative vote by a permanent member will also block the selection of a Secretary-General, although this is a "recommendation" to the General Assembly rather than a Resolution. Thus Only statement one is true.