(A) is true as instead of absolute address we can use a much smaller relative address in instructions which results in smaller instruction size.
(B) By using the base address of array we can index array elements using relative addressing.
(C) is true as we only need to change the base address in case of relocation- instructions remain the same.
(D) is false. Relative addressing cannot be faster than absolute addressing as absolute address must be calculated from relative address. With specialized hardware unit, this can perform equally as good as absolute addressing but not faster.