The default subnet mask for a class B network can be
here we are asked which among these could a subnet mask for class B, but in D option it is just the default network for class B. So according to me subnet mask will be C. As when subnetting is done in class B , it's subnet mask includes more number of bits than the network mask of class B.
See the address and subnet mask range:
I think the translation looks like Tag=29...
What significance does this line holds in this...
First of all, congratulations!