Positive numbers are to the right of 0. Point B is more than 2 units to the left of 0 and less than 3 units to the left of 0. Therefore it represents a number between $\displaystyle-{2}\usepackage{cmbright}\Huge\$ and $\displaystyle-{3}\usepackage{cmbright}\Huge\$ , not between 2 and 3.