Large financial institutions act as market makers for swaps. The 5-year swap bid rate is 6.23% and the offer rate is 6.39%. Then, a company can convert a 5-year fixed rate investment of 6.72% to a 5-year floating rate investment of ____________.

a.LIBOR + 37 basis points

b.LIBOR + 33 basis points

c.LIBOR + 95 basis points

d.LIBOR + 49 basis points

e.LIBOR + 62 basis points