[单选题]
A hot air balloon rise3x ,5zxqzip b 8c cq8xzc/e.4ns to an altitude of 600 fathoms. What is trj,tw(k3 gicpvz8q se)k1ai, f ,:.xshis height, in feet? ( sspx). ve, ,qkjwz1t kfir,(g:c83 ia$1 \; fathom = 6 \; ft$)
A. $100 \; ft$
B. $600 \; ft$
C. $1200 \; ft$
D. $3600 \; ft$