Which of the following assumptions of the Rankine’s theory of lateral earth pressure are correct?1. The soil mass is semi-infinite, homogenous, dry and cohesion-less2. The ground surface is a plane which may be horizontal or inclined3. The wall yields about the base and thus satisfies the deformation condition for plastic equilibrium

• A. 1 and 2 only
• B. 1 and 3 only
• C. 1, 2 and 3
• D. 2 and 3 only