A. Both a and r are true and r is the correct explanation of a B. Both a and r are true but r is not the correct explanation of a C. A is true but r is false D. A is false but r is true
A. Water surface under the ground is at atmospheric pressure B. Water is under pressure between two impervious strata C. Water table serves as upper surface of zone of saturation D. None of the above
A. Designed for one purpose but serves more than one purpose B. Planned and constructed to serve various purposes C. Both (a. and (b. D. None of the above
