Malena has $600 per month to spend on electricity and "other goods". Price of "other goods" is one, while price of electricity is $0.04 per kilowatt hour (kWh) for the first 800 kWh of power per month and $0.2 for any additional kWh. Put electricity on the horizontal axis.

a) For the amount of electricity less than 500 kwH per month, the slope of her budget line is [ Select ] ["-0.02", "-0.03", "-0.04", "-0.05", "-0.06", "-0.2", "-0.3", "-0.4", "-0.5", "-0.6", "-2", "-3", "-4", "-5", "none of the above"]

b) A bundle of 5,000 kwH and 240 of "other goods" is feasible for her [ Select ] ["yes", "no", "not enough information to determine"]

c) A bundle of 2,000 kwH and 300 of "other goods" is feasible for her [ Select ] ["yes", "no", "not enough information to determine"]

d) A bundle of 6,000 kwH and 250 of "other goods" is feasible for her [ Select ] ["yes", "no", "not enough information to determine"]