The ratio of height of Porter governor to the height of Watt‚Äö√Ñ√∂‚àö√ë‚àö¬•s governor is$

The ratio of height of Porter governor to the height of Watt‚Äö√

1.	The ratio of height of Porter governor to the height of Watt‚Äö√Ñ√∂‚àö√ë‚àö¬•s governor is$
A.	m/m + M
B.	M/ m + M
C.	m + M/m
D.	m + M/M
Answer» D. m + M/M