If \[P\bigcap Q=Q\]and \[P\bigcap Q=P\] then which among the following cannot be true?

\[P=\left\{ \text{1, }2,\text{ }3 \right\}\]and\[Q=\left\{ 1,\text{ }2,\text{ }3,\text{ }4,\text{ }5 \right\}\]

\[P=\left\{ a,\text{ }b \right\}\]and \[Q=\left\{ a,\text{ }b,\text{ }c \right\}\]

\[P=\left\{ s \right\}\]and \[Q=\left\{ m,\text{ }n,\text{ }s \right\}\]

\[P=\left\{ I,\text{ }m,\text{ }n \right\}\]and \[Q=\left\{ I,\text{ }m,\text{ }1,\text{ }2,\text{ }3 \right\}\]

If \[P\bigcap Q=Q\]and \[P\bigcap Q=P\] then which among the following

1.	If \[P\bigcap Q=Q\]and \[P\bigcap Q=P\] then which among the following cannot be true?
A.	\[P=\left\{ \text{1, }2,\text{ }3 \right\}\]and\[Q=\left\{ 1,\text{ }2,\text{ }3,\text{ }4,\text{ }5 \right\}\]
B.	\[P=\left\{ a,\text{ }b \right\}\]and \[Q=\left\{ a,\text{ }b,\text{ }c \right\}\]
C.	\[P=\left\{ s \right\}\]and \[Q=\left\{ m,\text{ }n,\text{ }s \right\}\]
D.	\[P=\left\{ I,\text{ }m,\text{ }n \right\}\]and \[Q=\left\{ I,\text{ }m,\text{ }1,\text{ }2,\text{ }3 \right\}\]
E.	None of these
Answer» E. None of these