The school has decided to replace all the cables between the Information Technologies [IT] Centre (E block) and each school building. Note that buildings can be connected to the IT Centre through another building. The potential cost of connecting different buildings is shown in the following table: A Block B Block C Block D Block E Block F Block G Block | J Block S Block T Block (IT) A Block 200 150 50 B Block 200 100 C Block 150 100 250 D Block 50 100 E Block 250 100 400 300 50 (IT) F Block 400 150 G Block 300 150 150 100 J Block 150 50 100 S Block 50 150 T Block 50 100 100 150 Identify the most cost effective solution that ensures that every building is connected to the IT Centre (E block)