Which Python function can be print the above plot?

a$.$ plot$($ypoints$,$ marker $=0^{\text{'}}\text{'})$

b$.$ plt$.$plot$($ypoints$,{?}^{1**-b})$

c$.$ None

d$.$ plt$.$plot$($ypoints$,($:${?}^{\text{'}**}{r}^{\text{'}}\}$