If in compound microscope m1 and m2 be the linear magnification of the objective lens and eye lens respectively, then magnifying power of the compound microscope will be [CPMT 1985; KCET 1994]

• A.            \[{{m}_{1}}-{{m}_{2}}\]     
• B.   \[\sqrt{{{m}_{1}}+{{m}_{2}}}\] 
• C.            \[({{m}_{1}}+{{m}_{2}})/2\]  
• D.            \[{{m}_{1}}\times {{m}_{2}}\]