Let `A={a , b , c , d},\ B={a , b , c}a n d\ C={b , d}` . Find all sets `X` such that: `XsubB\ a n d\ XsubCdot`

Explanation

To solve the problem, we need to find all sets \( X \) such that \( X \subseteq B \) and \( X \subseteq C \).

Given:
- \( A = \{a, b, c, d\} \)
- \( B = \{a, b, c\} \)
- \( C = \{b, d\} \)

### Step 1: Identify the subsets of \( B \) and \( C \)
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