True false questions

1.If array is an array of words, and esi contains the address of array: mov ax, [esi+4] will move the third element of array into ax

2.After these 2 instructions run: mov al, 11b or al, 1 al still has the same value: 11b

3.To divide a value by a power of 2, the SHR instruction should be used for unsigned integers, and the SAR instruction should be used with signed integers.

4.The following statement will assemble without errors: mov WORD PTR [eax], 1234h