Shrek and Donkey are trying to cross over the lava to get to the princess' castle. There are three possible bridges they can take, and they need to know which of them are safe and which of them are not safe. All 3 bridges are made of the same wood with a fracture strength of 150 MPa. Bridge 1 spans 15 m and is 30 cm wide and 4 cm thick, Bridge 2 spans 25 m and is 20 cm wide and 6.5 cm thick, and Bridge 3 spans 11 m and is 25 cm wide and 5 cm thick. Donkey weighs 330 lbs and Shrek weighs 550 lbs. What is the difference between a B2C and a C2B? B2C focuses on companies as customers and C2B focuses on consumers as customers. B2C focuses on consumers as customers and C2B focuses on companies as customers. B2C focuses on collaboration and C2B focuses on consumers. B2C focuses on business to consumers and C2B focuses on consumers to business.