Refer to the given flow chart.
Select the option which correctly identifies P-S.
AP- Mango tree Q- Fern R- Potato S- Bryophyllum
BP- Maize Q- Onion R- Strawberry S- Sweet potato
CP- Pine tree Q- Moss R- Ginger S- Dahlia
DP- Wheat Q- Banana R- Rose S- Bougainvillea