Identify the invalid identifier from the following:

int x = 98; char ch = (char)x; what is the value in ch?

1. b
2. A
3. B
4. 97

The size of '\n' is:

1. 2 bytes
2. 4 bytes
3. 8 bytes
4. 16 bytes

The number of bytes occupied by a character array of four rows and three columns are:

1. 12
2. 24
3. 96
4. 48