(A) ** True
(B) False
EXPLANATIONS BELOW
Concept note-1: -Many country communes of Upper Silesia had given Polish majorities. Overall, however, the Germans won the vote by a measure of 59.4% to 40.6%.
Concept note-2: -The plebiscite in Upper Silesia was held on March 20, 1921. 40.3 percent voted in favor of joining Poland, 59.4 percent voted to remain within Germany.
Concept note-3: -IGCSE HISTORY REVISION: UPPER SILESIA 1921. The Upper Silesia plebiscite was a plebiscite mandated by the Versailles Treaty and carried out on 20 March 1921 to determine ownership of the province of Upper Silesia between Weimar Germany and Poland.
Concept note-4: -Regierungsbezirk Breslau, known colloquially as Middle Silesia (German: Mittelschlesien, Silesian: Strzodkowy Ślōnsk, Polish: Śląsk Środkowy) was a Regierungsbezirk, or government region, in the Prussian Province of Silesia and later Lower Silesia from 1813 to 1945.