Pick up the correct statement from the following :

• A confined bed of impervious material laid over an acquifer, is known as an aquiclude
• The top most water bearing strata having no acquifer, is known as non-artesion acquifer
• The ordinary gravity wells which supply water from the top most water bearing strata, are called water table wells
• A permeable stratum which is capable to yield appreciate quantities of ground water, is known as an aquifer
• All the above.