I suggest you find a telecomm textbook to check the answers.
I alomst forgot it because I studied it 16 years ago and didn't use it until now.
The Shannon equation describe the maximum capacity limit in theory, but in fact for CDMA, say 5MHz and 3.84Mcps, it is far below the Shannon capacity.
So in fact the capacity is different.
And for a BW=5MHz spectrum, the spectrum width is only about 3.84MHz, there must be some tolerance for BW to meet the MASK of 3GPP etc.