#### Answer

false

#### Work Step by Step

$B \subseteq C$ if all elements of set A are also elements of set B.
Note that some elements of A are not found in B.
This means that A is not a subset of B.
Therefore, the given statement is false.
Note that some elements of B are not found in C.
This means that B is not a subset of C.
Therefore, the given statement is false.