Statement: When a beetle moves along the sand within a few tens of centimetres of a sand scorpion, the scorpion immediately turns towards the beetle and dashes towards it.

• A. Reason: When a beetle disturbs the sand, it sends pulses is longitudinal, while the other set in transverse.
• B. Both statement and reason are true and the reason is the correct explanation of the statement
• C. Both statement and reason are true but the reason is not the correct explanation of the statement
• D. Statement is true but the reason is false
• E. Both statement and reason are false