A Is the Owner of a Parcel of Land Adjoining

A is the owner of a parcel of land adjoining a river. There is an accretion formed through the natural current of the river. In 1980, his neighbor took possession of the accretion. In 2011, B filed an application for registration. Will the petition prosper?

A) No, because A is the owner being the owner the land to which the accretion is attached.
B) No, because the accretion is a public land.
C) Yes, having acquired it by prescription after 30 years of possession even in bad faith and without title.
D) No, because the title of A is imprescriptible, the accretion being covered by the phrase "more of less."