Can there be a ti

i. This can be a time-temperature graph, because the temperature can increase with increase in time.

ii. It can be a time-temperature graph, since the temperature can decrease with the decrease in time.

iii. It can’t be a time- temperature graph because the graph shows different temperature on the same time which is not possible.

iv. This can be a time-temperature graph, as same temperature at different times is possible.