What is the name of a built-in package that provides additional data types (for example: Counter, ChainMap, deque), providing alternatives to general-purpose built-in types such as dict, list, set, and tuple?

What is the name of a built-in package that provides additional data types (for example: Counter, ChainMap, deque), providing alternatives to general-purpose built-in types such as dict, list, set, and tuple?
 
a. datatypes
b. types
c. ctypes
d. collections
e. pytype