35. the klein-gordon equation for a free particle of rest mass 'm' is given by (a) s20u (a) n'c°v*y +mc' (b) - n°c*vy +mfc'v (c)-20y c)- --*v°y+mfc°y (d) --i°c*

35. The Klein-Gordon equation for a free particle of rest mass 'm' is given by (A) s20u (A) n'c°v*y +mc' (B) - n°c*vy +mfc'v (C)-20y C)- --*V°y+mfc°y (D) --i°c*v*y-m°c'v