Let X = {a,b,c} and P(X) be the power set of X. A relation R is defined on P(X) as follows: For all A, BE P(X), ARB = the number of elements in A less than or equal to the number of elements in B. The binary relation R is: : O a. Reflexive, not symmetric, not transitive O b. Not reflexive, symmetric, not transitive O c. Reflexive, not symmetric, transitive d. Reflexive, symmetric, not transitive e. Reflexive, symmetric, transitive