All of the Following Are Correct About Agar Except
A)it $\circ$

All of the following are correct about agar except

A) it is flexible.
B) it melts at the boiling point of water (100 ^$\circ$ C) .
C) it is a source of nutrition for bacteria.
D) it solidifies below 42 ^$\circ$ C.
E) it is solid at room temperature.