A researcher is setting up an experiment to measure basal metabolic rate in prairie voles (Microtus ochrogaster-a small rodent).Which of the following would be the best set of conditions for the voles immediately before and during the measurement?

A)House the animals in a cage with plenty of food and water to avoid stress; conduct measurements in a warmer room than the room where housed.
B)House the animals in a cage with plenty of food and water to avoid stress; conduct measurements in a room the same temperature as the room where housed.
C)House the animals in a cage with no food for a few hours before measurement; conduct measurements in a colder room than the room where housed, while the voles are being exercised.
D)House the animals in a cage with no food for a few hours before measurement; conduct measurements in a room the same temperature as the room where housed.
E)House the animals in a cage with no food for a few hours before measurement; conduct measurements in a room the same temperature while the voles are being exercised.