Question $16(1$ point$)$

In Ruby, all variables are polymorphic and all bindings of method talls to methods are dynamic.

True

False

$7$

Question $17(1$ point$)$

In Java, all objects are allocated from the heap and accessed through reference variables.

True

False

Question $18(1$ point$)$

Java uses explicit heap storage recovery while $C++$ uses implicit heap storage recovery.

True

False

Question $19(1$ point$)$

Information hiding is one of the primary features of abstract data types.

True

False