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