can anyone prove this

[mellow rampart]

For a universal set 𝑈, 𝐴 ⊆ 𝑈. Prove that 𝜙 ⊆ 𝐴. If 𝐴 ≠ 𝜙, prove that 𝜙 ⊂ 𝐴.

[dull violet]

what have you tried?