39. The barometer of a mountain hiker reads 930 mbars at the beginning of a hiking trip and

780 mbars at the end. Neglecting the effect of altitude on local gravitational acceleration,

determine the vertical distance climbed. Assume g = 9.7 m/s2

.

A. 1274.21 m

B. 1289.00 m

C. 1267.34 m

D. 1583.34 m