(iv) (a) in the case of a head of the household who does not receive a monthly allowance for shelter pursuant to the social services law, (A) the maximum rent for the housing accommodation exceeds one-third of the aggregate disposable income, or (B) subject to the limitations contained within item (d) of subparagraph (i) of paragraph three of this subdivision, if any expected lawful increase in the maximum rent would cause such maximum rent to exceed one-third of the aggregate disposable income, or (C) subject to the limitations contained within item (d) of subparagraph (i) of paragraph three of this subdivision, if such head of household has been granted a rent increase exemption order that is in effect as of January first, two thousand fifteen or takes effect on or before July first, two thousand fifteen regardless of whether the maximum rent or any expected lawful increase described in this clause exceeds one-third of the aggregate disposable income; or
(b) in the case of a head of the household who receives a monthly allowance for shelter pursuant to the social services law, the maximum rent for the housing accommodation exceeds the maximum allowance for shelter which the head of the household is entitled to receive pursuant to the social services law, or subject to the limitations contained within item (d) of subparagraph (i) of paragraph three of this subdivision, if any expected lawful increase in the maximum rent would cause such maximum rent to exceed the maximum allowance for shelter which the head of the household is entitled to receive.
(3) (i) A rent exemption order pursuant to this subdivision shall provide: