Which of the following groups of landforms is associated with sandstone formations in Nigeria?

• A Cuseta, gullies, dry valleys, residual hills
• B Cuesta, bornhard, gullies, dry valleys
• C Cuesta, inselbergs, escarpments, dry valleys,
• D Bornhardts, inscarpbergs , gullies, cornstones
• E Cuesta, residual hills, escarpments,corestones,