The inability to work, to work full-time or to continue in the same job may be caused by an accident or lilness. Payment of a benefit will require proving the existence of a "disability" as defined in the insurance policy. The sequence is as follows: 1) A period of total disability may be required before partial disability benefits are available 2) In the above situation, the waiting period must elapse before benefits are payable 3) Proof the insured person is no longer able to perform the duties or activities of their occupation 4) Proof the insured person is no longer able to perform the duties or activities of their occupation is not required 5) Assessment that a claimant has recovered or not, and whether they remain permanently, totally or partially disabled (if that situation is covered). 6) Financial evidence to support a claim for lost income and lost income potential due to a disability is never required. Which of the above statements are valid? Select one: a. They are all valid b. 1,2,3&4 C. 2,3,486 d. 1,2,3&5