$(C012.25)_H - (10111001110.101)_B $
$= 1100\;0000\;0001\;0010.\;0010\;0101$
$- 0000\;0101\;1100\;1110.\;1010\;0000$
$= 1011\;1010\;0100\;0011.\;1000\;0101$
$= 1\;011\;101\;001\;000\;011 .\;100\;001\;010$
$= (135103.412)_o$
Binary subtraction is like decimal subtraction:$ 0-0 = 0, 1-1 = 0, 1-0 = 1, 0-1 = 1$ with $1$ borrow.
Correct Answer: $A$