Which teams can qualify for T20 World Cup 2021 semi-finals from Super 12 Group 1?

England, Australia and South Africa are in contention to reach T20 World Cup 2021 semi-finals from Super 12 Group 1. England have virtually qualified for semi-finals. To advance, Australia need to beat West Indies and hope England beat South Africa or South Africa don't beat England by big margin. South Africa would need to beat England by a big margin.