What is the typical height range of Symphyotrichum greatae stems?

A. 50 to 120 centimeters (1+3⁄4 to 4 feet)
B. 10 to 30 centimeters (4 to 12 inches)
C. 150 to 250 centimeters (5 to 8 feet)
D. 300 to 400 centimeters (10 to 13 feet)
Answer: 