Assertion: At the microscopic level, all bodies are made up of charged constituents (like nuclei and electrons) and various contact forces exist between them.
Reason: These forces are due to elasticity of bodies, molecular collisions and impacts, etc.
Options:
(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 and R is also false.