A Fully Developed Leaf Undergoing Photosynthesis Will Produce Sugars and Serve

A fully developed leaf undergoing photosynthesis will produce sugars and serve as a _______, capable of sending sugar to a storage organ.However, a leaf may also be a _______ if it is developing and receiving sugar from a storage organ; the storage organ then would be _______.

A) source; sink; a sink
B) sink; source; a sink
C) source; sink; both source and sink
D) source; sink; a source
E) sink; source; a source