Provide an Appropriate Response $( a , b )$ On The $x$

Multiple Choice

Provide an appropriate response.
- Given the interval $( a , b )$ on the $x$ -axis with the point $x _ { 0 }$ inside, find the greatest value for $\delta > 0$ such that for all $x , 0 <$ $\left| x - x _ { 0 } \right| < \delta \Rightarrow a < x < b \text {. }$
a = 9, b = 19, x0 = 16

A) 1
B) 3
C) 4
D) 7