Regardless of the value of B, if $\displaystyle{x}={0}\usepackage{cmbright}\Huge\$ then $\displaystyle{y}={\sin{{0}}}={0}\usepackage{cmbright}\Huge\$ , so the graph must pass through the origin. Because the coefficient of the function is 1, the amplitude is 1. Now different values of B will stretch or shrink the graph of sine, but in any case, the graph will have a hill just to the right of the y-axis. This is the only one of the graphs with all of these properties.