Karen's portfolio. which has a beta of 1.26. consists of three mutual funds: an international fund, a utility fund, and a technology fond. The international fund has a beta of 1.5 and makes up 20% of the portfolio. The utility fund has a beta of 0.5. and the technology fund has a beta of 1.3. If the portfolio's beta equals 1.26. how much of Karen's portfolio is invested in the technology fund?
A 40%
B 70%
C 50%
D 55%
E 60%