Select from options: Continue writing the next sentence.

He uses a large garden fork to lift the top layer of the roof up. each time he lifts a part up

 a. , he dumps the metal onto the tiles and moves the metal around.; b. , he throws it to the ground and continues to lift more parts up.; c. that comes down in pieces, he speaks to nobody.; d. , a piece escapes and he uses finally the lower part underneath.;
Answer:
b.