# UGC-NET | UGC NET CS 2015 Dec – III | Question 73

Consider a language A defined over the alphabet $\sum$ = {0, 1} as The expression &space;=&space;0&space;\right&space;\}” title=”A = \left \{ 0^{\left \lfloor n / 2 \right \rfloor}1^{n}: n> = 0 \right \}” /> The expression $\left&space;\lfloor&space;n&space;/&space;2&space;\right&space;\rfloor$ means the floor of n/2, or what you get by rounding n/2 down to the nearest integer.
Which of the following is not an example of a string in A?

(A) 011
(B) 0111
(C) 0011
(D) 001111