Given the Relation X Below


X $\begin{array} { l l l } \mathrm { A } & \mathrm { B } & \mathrm { C } \\\hline 2 & 5 & 7 \\3 & 3 & 3 \\4 & 4 & 2 \\5 & 2 & 8\end{array}$

Multiple Choice

Given the relation X below


X: $\begin{array} { l l l } \mathrm { A } & \mathrm { B } & \mathrm { C } \\\hline 2 & 5 & 7 \\3 & 3 & 3 \\4 & 4 & 2 \\5 & 2 & 8\end{array}$
What value will be retrieved by the following query?
TEMP ? SELECT from X where B = C
RESULT ? PROJECT B from TEMP

A) 2
B) 3
C) 4
D) 5