Given below is the diagram of a stomatal apparatus . In which of the following all the four parts labelled as A , B,C and D are correctly identified ?
A. A- Subsidiary cell
B-Epidermal cell
C-Guard cell
D- Stomatal aperture
B. A- Guard cell
B- Stomatal aperture
C-Subsidiary cell
D-Epidermal cell
C. A-Epidermal cell
B- Guard cell
C- Stomatal aperture
D- Subsidiary
D. A-Epidermal cell
B- Subsidiary cell
C-Stomatal aperture
D- Guard cell
