Which of the following is true about investment expenses? Commissions paid on sales of stock are deductible, subject to the 2%-of-AGI floor. The cost of investment advice is deductible, subject to the 2%-of-AGI floor. The cost of attending an investment-related seminar is deductible, subject to the 2%-of-AGI floor. The cost of traveling to attend a shareholders' meeting is deductible, subject to the 2%-of-AGI floor.