Nestle has not entered the DM public debt market because of concern about a likely appreciation of that currency and only wishes to be a floating$-$rate dollar borrower, which it can be at LIBOR $+1\%.$ Microsoft strongly prefers fixed$-$rate DM debt, but it must pay $1\mathrm{.}5\%$ more than the $6\mathrm{.}25\%$ coupon that Nestle's DM notes would carry. Microsoft, however, can obtain Eurodollars at LIBOR $+0\mathrm{.}5\%.$ What is the maximum possible cost savings to Nestle from engaging in a currency swap with Microsoft if the latter provides all the savings to former?

a$.1\mathrm{.}25\%$

b$.2\%$

c$.6\mathrm{.}25\%$

d$.1\%$

e$.$ None of the options in this question are correct.