Q13: On a certain day, Tim invested $1,000 at 10 percent annual interest, compounded annually, and Lana invested $2,000 at 5 percent annual interest, compounded annually. The total amount of interest earned by Tim’s investment in the first 2 years was how much greater than the total amount of interest earned by Lana’s investment in the first 2 years? A. $5 B. $15 C. $50 D. $100 E. $105 \
Answer: A算了N遍还是得105，
能不能帮着算一下啊？我那里错了？1000*（1+0。1）^2-1000-2000*(1+0.05^2) | 
