Since Diu had designated her son Shan as the primary beneficiary and her niece Haru as the contingent beneficiary, the death benefit from the annuity will pass to Haru, the contingent beneficiary, after Shan's death. In annuity contracts, if the primary beneficiary predeceases the annuitant and no changes are made to the designation, the benefits will typically go to the contingent beneficiary. According to LLQP principles, a contingent beneficiary is entitled to receive the remaining guaranteed payments when the primary beneficiary is no longer able to do so​​.

Option A is incorrect as Shan’s widow is not mentioned as a beneficiary. Option B is incorrect as Shan's estate would not receive the benefits if a contingent beneficiary exists. Option D is incorrect as Diu’s estate would only receive the benefits if no beneficiaries were named.