ANS:A - 1011.1011

Well, here we need to first convert the No. into decimal No. By multiplying each digit with 8^0 8^1.

1*8^1+3*8^0. 5*8^-1+4*8^-2.
Result = 11.11.

Now its LCM by 2 i.e. decimal to binary which is,

Option A 1011 1011.

This is totally wrong.

The answer is that,

Just write octal counting then equal to decimal so that.

The decimal equivalent is 11.44 now you convert into decimal answer will be 1011.1011.