Using the idea that $\displaystyle{A}\cdot{B}\usepackage{cmbright}\Huge\$ can be represented by $\displaystyle{A}\usepackage{cmbright}\Huge\$ groups of movements on the number line, which of the following is true for the product $\displaystyle{\left(-{3}\right)}\cdot{4}\usepackage{cmbright}\Huge\$ ?