Water at $\text{4°C}$ is filled to the brim of two beakers of glass of negligible coefficient of expansion.  A boy performed an experiment of heating beaker (A) and cooling the beaker (B). The observation he makes will be

level of water in (B) goes down and the water in the beaker (A) overflows

water overflows in both (A) and (B)

water overflows in the beaker (B) and water level goes down in beaker (A)

water level goes down in both (A) and (B)