A. Yes, this is an example of tuple unpacking. a=1 and b=2
B. Yes, this is an example of tuple unpacking. a=(1,2) and b=3
C. No, too many values to unpack
D. Yes, this is an example of tuple unpacking. a=1 and b=(2,3)

Solution

C. No, too many values to unpack

Explanation

For unpacking to happen, the number of values of the right hand side must be equal to the number of variables on the left hand side.