Answer:
The correct option is C.
Explanation:
Given information:
Location of point A =

Location of point B =

We need to find the distance between points A and B.
Distance between points A and B = Location of point A - Location of point B




Distance can not be negative. So,


Negative 7 over 10 minus negative 2 over 10 = negative 5 over 10; therefore, the distance from A to B is absolute value of negative 5 over 10 equals 5 over 10 units.
Therefore, the correct option is C.