How many sequences of 0 \mathrm{~s} and 1 \mathrm{~s} of length 19 are there that begin with a 0 , end with a 0 , contain no two consecutive 0 s, and contain no three consecutive 1 \mathrm{~s} ?
Answer Choices
A. 55
B. 60
C. 65
D. 70
E. 75
How many sequences of 0 \mathrm{~s} and 1 \mathrm{~s} of length 19 are there that begin with a 0 , end with a 0 , contain no two consecutive 0 s, and contain no three consecutive 1 \mathrm{~s} ?
Answer Choices
A. 55
B. 60
C. 65
D. 70
E. 75