Answer:
B=40, C=100
Step-by-step explanation:
If the predictions are correct and the same GMP ratio is used then the value of B will be increased by a factor of 2 x A value that is 40 and the value of C will be increased by a factor of 4 x A that is 100.
In Schema theory it becomes very important to remember that the action of one will be according to the parallel ratio to others. So, we just have to increase or decrease the particular value by the corresponding factor.