A spider crawls $4\mathrm{.}7$ m at an angle of $24$ north of east. Another spider crawls $5\mathrm{.}2$ m at an angle of $24$ east of north. The eastward displacements of the spiders are, respectively,

$24$

a$)1\mathrm{.}9$ and $2\mathrm{.}1$ m

b$)4\mathrm{.}3$ and $4\mathrm{.}8$ m

c$)4\mathrm{.}3$ and $2\mathrm{.}1$ m