Direction: In the following questions, the symbols @, $, #, © and % are used with the following meanings as illustrated below.
'P $ Q' means 'P is not smaller than Q'.
'P © Q' means 'P is neither smaller than nor equal to Q'.
'P # Q' means 'P is neither smaller than nor equal to Q'.
'P % Q' means 'P' is not greater than Q'.
'P @ Q' means 'P is neither greater than nor smaller than Q'.
Now, in each of the following questions assuming the given statements to be true, find which of the four Conclusions I, II, III and IV given below them is/are definitely true and given your answer accordingly.

Statements
M @ B, B # N, N $ R, R © K
Conclusions
I. K # B
II. R © B
III. M $ R
IV. N © M

 I and III are ture
 I and III are ture
 II and IV are ture
 II, III and IV are ture
 None of the above
Correct Option: C
Statements
M @ B ⇒ M = B
B # N ⇒ B > N
N $ R ⇒ N ≥ R
R © K ⇒ R < K
i.e., M = B > N ≥ R < K
Conclusions
I. K # B ⇒ K > B (x)
II. R © B ⇒ R < B (✔)
III. M $ R ⇒ M ≥ R (x)
IV. N © M ⇒ N < M (✔)
Hence, II and IV are definitely true.