P `o+` Q means P is greater than Q.
P `underline"©"` Q means P is either greater than or equal to Q.
P = Q means P is equal to Q.
P @ Q means P is smaller than Q.
P `underlinecancel("@")` Q means P is either smaller than or equal to Q.
U `o+` N, S `underline"©"` O, N @ D, O = U
Conclusions: I. N @ S II. U = D

Options

A. If only I is true
B. if only conclusion II is true
C. if either conclusion I or II is true
D. if either I nor II is true

Answer

A

Explanation

Statements: `U gt N, S ge O, N lt d, O = U`
Conclusions: I. `N lt S` II. U = D
For I, combine `U gt N` with O = U to get `O gt N`. Now, combine this with `Sge O` to get `S ge O gt N`. Now, this gives `S gt N`. So, I is true. II can.t be true as there are no equalities involving D in the given statements.