Use the Gantt chart and activity list to determine which resource is used the least.

Activity

Resources

Activity

Resources

R

$3,5$

M

$1,2$

H

$1$

K

$4$

G

$2,5$

J

$3$

F

$4,1$

P

$1$

B

$2$

S

$3,4$

T

$4$

W

$3$

Group of answer choices

Resource $3$

Resource $2$

Resource $4$

Resource $1$