Which of the following describes a single-premium deferred variable annuity? A) Karen retires from her job and the next day buys a variable annuity, which will begin to pay her monthly income starting next month. B) Tom puts $100 a month into a variable annuity, which will pay him a monthly income at age 60 . C) Jean inherits $20,000 and purchases a variable annuity with it. It will begin to pay her regular income in 15 years. D) Bob's father buys a variable annuity for him at age 16. The semi-annual premiums are $500