Answer:
They are of the same data type
Step-by-step explanation:
An array is an indexed collection of data elements of the same type. An array is a set of data elements stored under the same name. Arrays can be created to hold any type of data, and each element can be individually assigned and read. The restriction of the same type is an important one, because arrays are stored in consecutive memory cells. Every cell must be the same type (and therefore, the same size).