As per the passage which of the following is/are challenges likely to be faced by developing countries seeking to forge a JET-P alliance with the developed countries? 1. Having to deal with the income disparities that are likely to develop, between the currently coal-producing and the other regions, in the event of adopting 'phase-down' measures. 2. Not being able to think of suitable alternative energy options/sources that could adequately make up for any loss of coal energy. 3. Not having able and knowledgeable negotiators in the teams designated to interact with the team from the developed countries that are willing to offer them financial assistance. 4. Having to ensure that the developed countries offering financial assistance do collectively comprehend, and deal with, differences in the nature of the economies of the developing countries as compared to their own. 5. Not being able to afford the cost of loans that the developed countries are offering under this mechanism.