Why did Marc Brunel want to build a tunnel connecting East and South London?A. Transport of carts and wagons would become easier through the tunnel, which would improve business. B. Building a bridge to connect the two parts of London would be more challenging and expensive. C. People would find it easier to travel to different parts of London on a daily basis for their work. D. The tunnel would be cheaper for transportation of goods, which would save an enormous amount of money.