My grandparents' lake house was built in 1953. It was completely destroyed by the forest fire.
A.My grandparents' lake house built in 1953 and was completely destroyed by the forest fire.
B.My grandparents' lake house, built in 1953, was completely destroyed by the forest fire
C.My grandparents' lake house was built in 1953, so it was completely destroyed by the forest fire
D.The forest fire destroyed my grandparents' lake house was built in 1953