L(r) = 1(1+0)* = {1,10,11,100,101,110,111, …..}
L(s) = $1^{+}$0 = {10,110,1110, ….}
L(t) = $1^{*}$0 = {0, 10,110,1110, ….}
From the above langages we can can write
L(s) ${\displaystyle \subset }$ L(t) ${\displaystyle \subset }$ L(r)
Therefore L(s) ${\displaystyle \subset }$ L(r) and L(s) ${\displaystyle \subset }$ L(t) but not L(s) ${\displaystyle \subseteq }$ L(r) and L(s) ${\displaystyle \subseteq }$ L(t)
Therefore the answer should be
E)None of the above
Correct me if i am wrong