Transmission Line Help

No.14315911 ViewReplyOriginalReport
For a half wave transmission line (gamma/2):

Given impedances: ZL = 40 ohms (unnormalized)
Z0 = 10 ohms
VSWR = 4

Given smith chart points:
Point A: 1 + 1.4j at 0.1703*gamma
Point B: 0.32 + 0j at 0*gamma
Point C: 4 + 0j at 0.25*gamma
Point D: 1-1.4j at 0.3205*gamma

Out of these four values, which ones have the possible values for d and Xs? (there are two possible answers; also, Xs is not a stub.)

Please explain how this problem works. Thanks.