Java Ocjp Quiz

which of the following declarations are valid?choose all correct answer(s)?
1)int x=10;
2)int x=066;
3)int x=0786;
4)int x=0xFACE;
5)int x=0XBeer
6)int x=0xbea;

Options:
a)1,2,3,4,5,6
b)1,2,4,6
c)13,4,5,6
d)None of the above

which of the following declarations are not valid?
if not valid comment the reason?

int a=10;
int a=10l;
long l=10l;
long l=10;
byte b=100;
byte b=127;
byte b=128;
byte b=012;
short s=200;
short s=32768;