A Cord Stretched to a Tension F_T,consists of Two Sections $\mu$

A cord stretched to a tension F_T,consists of two sections whose linear densities are μ₁ and μ₂ (< $\mu$ ₁) .A wave of frequency f and speed v is sent along the cord from one end.Which of the following statements is true about the transmitted and reflected waves?

A) Both the transmitted and reflected waves have the same speed,v.
B) Both the transmitted and reflected waves have the same frequency,f.
C) Both the transmitted and reflected waves have the same wavelength, $\lambda$ = v/f.
D) The reflected wave is inverted compared to the transmitted wave.
E) none of the above