A number line is shown below. The numbers 0 and 1 are marked on the line, as are two other numbers a and b. What is a+b?
A 2a
B 2b
C 0
D The answer can not be found using the information given
![A number line is shown below The numbers 0 and 1 are marked on the line as are two other numbers a and b What is ab A 2a B 2b C 0 D The answer can not be found class=](https://us-static.z-dn.net/files/d48/dac40054f5d9482f123bcba3ffc2bead.png)