A Transverse section of stem is stained first with safranin and then with fast green following the usual schedule of double staining for the preparation of a permanent slide. What would be the colour of the stained xylem and phloem?

(a) Red and green

(b) Green and red

(c) Orange and yellow

(d) Purple and orange

(a) The xylem is coloured red with safrinin and phloem green with fast green, whereas other colours are not given by safranin and fast green.