Which of the following countries was not a semi-finalist in the second ICC World T-20?

The semi-finalists of the 2009 T20 World Cup were Pakistan, Sri Lanka, South Africa, and West Indies. South Africa WAS a semi-finalist. Wait, the question asks who was NOT. South Africa lost in the Semis. The answer options are Pak, WI, SA, SL. All four were semi-finalists! Pakistan won, SL runner up, SA and WI lost in semis. The question might imply who didn't reach the final? But it says 'semi-finalist'. Technically all 4 were. If one must be chosen, perhaps there's a mistake in the question or options. However, typically South Africa chokes in semis.