What is the label stack of the packets leaving R6 going toward R5 for traffic flowing from CE1 to CE2?

Refer to the exhibit. A service provider is providing Layer 2 VPN between CE1 and CE2 via a pseudowire created between R1 and R5.

What is the label stack of the packets leaving R6 going toward R5 for traffic flowing from CE1 to CE2?
A . Single label of 17
B . 24(top) and 0 (Bottom)
C . Single label of 24
D . 3 (top) and 24 (bottom)
E . 0 (top) and 24 (bottom)
F . 0 (top) and 17 (bottom)
G . 3 (top) and 24 (bottom)
H . 17 (top) and 0 (bottom)

Answer: F