Jane filed her 2018 Form 1040 on April 4, 2019. What is the date on which the applicable statute of limitations expires in each of the following independent situations?

a. Jane incurred a bad debt loss that she failed to claim. The applicable statute of limitation is (0/3/6/7) years.

b. Jane inadvertently omitted one-third of the correct gross income. The applicable statute of limitations is (0/3/6/7) years.

c. Jane deliberately omitted one-third of the correct gross income. There is (a 3 year/ 6 year/ 7 year/ no) statute of limitations.

d. Jane innocently overstated her deductions by a large amount. The applicable statute of limitation is (0/3/6/7) years.

e. No return was filed by Jane. The absence of a return (does/ does not) preclude the running of the statute of limitations.