JAMB Biology 1978 Question 20

A potometer with a leafy shoot weighed 18.9g initially and 17.9g after 1 hour. From this it follows that

1. A.the shoot absorbed 1 g of water per hour
2. B.1 g of water per hour evaporates from the potometer
3. C.the shoot lost 1 g of water per hour
4. D.the potometer water receded at the rate of 1 g per hour
5. E.the shoot was respiring and lost weight at the rate of 1 g per hour