What does the term 'carbon count' mean?
1. A measure of the amount of carbon dioxide you produce through your lifestyle every day.
2. A measure of the amount of carbon present on Earth.
3. A measure of the amount of carbon and carbon dioxide on Earth.
Select the correct answer using the code given below.

A

1 only

B

1,2 and 3 only

C

1 and 2 only

D

2 only