If the average of A and B is 30, the ave...

If the average of A and B is 30, the average of C and D is 20, then which of the following is/are correct?
1. The average of B and C must be greater than 25.
2. The average of A and D must be less than 25.
Select the correct answer using the code given below:

A

1 only

B

2 only

C

Either 1 or 2

D

Neither 1 nor 2

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