Thanks for the question! So remember, we’re trying to find the food that CANNOT be added first. Look at our last rule. It says that M comes before T or K, but not both. But if M is first, it comes before both. So M can never come first!
As for (B), the only rule about L is that if M is third, then L is last. But if M isn’t third, anything could go. So L could certainly be first.
Hope this helps! Feel free to ask any other questions that you might have.
eversmon February 16, 2021
I think chloe was referring to the contrapositive of Rule 2 resulting that L could not be added first
jrb970on April 8, 2021
If you look a rule two, it states that is Z1 --> L>O. The contrapositive to this is if O>L --> ~Z1. In either instance, L cannot be first. In the first scenario, Z must be first, and in the second scenario, O comes before L, so L cannot come first.
