Sally has three pieces of material. The first piece is 1yd. 2ft. 6in. long, the second piece is 2yd. 1ft. 5in long, and the third piece is 4yd. 2ft. 8in long. How much material does Sally have?
A. 7yd. 1ft. 8in.
B. 8yd. 4ft. 4in.
C. 8yd. 11in.
D. 9yd. 7in.
E. 10yd.