In the last sentence in the text, the expression “a piece of our national heritage” refers to (A) the paintings by renowned artists such as Da Vi...

In the last sentence in the text, the expression “a piece of our national heritage” refers to


(A) the paintings by renowned artists such as Da Vinci and Rembrandt.
(B) Van Dyck’s Equestrian Portrait of Charles I.
(C) the priceless works of art kept safe during the war.
(D) Manod Quarry.
(E) London’s National Gallery’s collection.