Can you please help me with this question?

A bond has the following call dates, call prices, and yield-to-call computed for each call date. Which call date would be the yield-to-worst?

a)2/1/2020104.55.50%

b)2/1/2025102.55.40%

c)2/1/2026101.55.30%

d)2/1/2030100.05.20%