What are the similarities between the plants bearing the flowers as shown? (a) They have weak stems. (b) They have woody stems. (c) They produce seeds. (d) They grow along the ground.

• A.  (a) and (b) only                
• B.  (a) and (d) only
• C.  (b) and (c) only   
• D.             (a), (b) and (c) only