There are six questions below
Ascience teacher is selecting projects for each oftwo classes from a group of exactly seven projects—R, S, T,V, X,Y, and Z.The teacher will assign projects to Class 1 and Class 2 according to the following conditions：
Each project must be assigned to exactly one class. Four ofthe projects must be assigned to Class 1 and three toClass 2. R must be assigned to Class 2. The classto which V is assigned cannot be the same class asthe one to which Y is assigned. If V is assigned toClass 1, X must be assigned to Class 1. If Z is assigned toClass 2,Ymust be assigned to Class 1.
Which of the following could be the project sassigned to the two classes？
| Class 1 | Class 2 | |
| A | R, V, X,Y | S,T, Z |
| B | S,T,V,Z | R, X,Y |
| C | S,T, X,Y | R, V,Z |
| D | S,T, X, Z | R, V,Y |
| E | S,V, X,Y | R,T,Z |
If X is assigned toClass 2, which ofthe following must be true？
If Z is assigned to Class 2, which ofthe following must be true？
If Y is assigned to Class 2, any ofthe following could be assigned together to one of the classes EXCEPT
If T is assigned to the same class as V, which of the following must be assigned to the same class as each other？
If V is assigned to a different classfrom Z, which of the following must be true？