where i is the square root of -1. Which of the following statements is false?

Complex numbers have the form
```
realPart + imaginaryPart * i
```


a) C#’s simple numeric types are value types.
b) To mimic the simple numeric types, we can define ComplexNumber as a value type by
using a struct (short for “structure”) rather than a class.
c) C#’s simple types like int and double are actually aliases for struct types.
d) Microsoft recommends using structs for most new types, but recommends a class if the type represents a single value.

d) Microsoft recommends using structs for most new types, but recommends a class if the type represents a single value.