This project was supposed to knock all buildings off of the Dynamic Castle Crasher Playground, but it does not work correctly. Which of the following best describes the error in this project?
a) The entire project needs to be nested inside of a [Forever] loop so the conditions of the [If then else] block are constantly being checked.
b) The VR Robot needs to use the Distance sensor to detect the walls of the Playground.
c) The [Drive] block should be replaced with a [Drive for] block so the VR Robot has a specific distance it drives for.
d) The [Repeat until] block should be replaced with a [Wait until] block so the VR Robot is in the right position to knock down the buildings.