The data shown below concerns a firm over three years. During which period could the firm definitely be said to have increased in size?
- Abetween years 1 and 2: no; between years 2 and 3: no; between years 1 and 3: yes
- Bbetween years 1 and 2: no; between years 2 and 3: yes; between years 1 and 3: no
- Cbetween years 1 and 2: yes; between years 2 and 3: no; between years 1 and 3: no
- Dbetween years 1 and 2: yes; between years 2 and 3: yes; between years 1 and 3: yes