Choose the wrong statement from the given set of statements?

[answerhappygod]

a) All operators in C#.NET cannot be overloaded
b) We can use the new modifier to modify a nested type if the nested type is hiding another type
c) Operator overloading permits the use of symbols to represent computations for a type
d) In case of operator overloading all parameters must be of different type than the class or struct that declares the operators