Identify the correct statements from the following I. All alkaline earth metals give hydrides on heating with hydrogen. II. Calcium hydroxide is used to purify sugar III. $\mathrm{BeCl}_2$ is a dimer in gaseous phase.

• A

  I & III only
• Correct answer
  B

  II & III only
• C

  I, II, III
• D

  I & II only

Hence, the correct answer is option: 'B'.