Select the total number of correct statements from the following:

(1) In spring season cambium is active and produces a large number of xylary elements having vessels with wider lumen.

(2) The spring wood is also known as early wood.

(3) In winter, the cambium is less active and forms few xylary elements having narrow vessels this is called autumn wood or late wood.

(4) The spring wood is lighter in colour and has lower density.

(5) Autumn wood is darker and has higher density.

(6) Annual ring (autumn wood and spring wood) used to estimate the age of plant.