How many terms are there in the arithmetic sequence 13,16,19, \ldots, 70,73 ?

**Answer Choices**

A. 20

B. 21

C. 24

D. 60

E. 61

How many terms are there in the arithmetic sequence 13,16,19, \ldots, 70,73 ?

**Answer Choices**

A. 20

B. 21

C. 24

D. 60

E. 61