CFA Level I Mock Exam Afternoon Q117 someone, problem, solution, difference, understand

irlfaan7

I don't understand the solution why real risk premium is (B) 3.8%

The solution is (1+6.9%)/(1+3%) - 1 = 3.8%

When I do this problem, I just calculate the real equity return and real risk free return and the difference of the two rates is the risk premium.

r(e) = (1+9%)/(1+2%) = 6.9%
r(f) = (1+3%)/(1+2%) = 0.98%
risk premium = 6.9% - 0.98% = 5.88% which is (C)

Can someone give me some help here? Thanks