Professor Smith went to get her COVID test last week. when she arrived at the testing site, she proceeded to show her daily confirmation that she was clear to be on campus that day. there were 10 people in line ahead of her. she reached a check in representative 5 minutes after she joined the line. the representative confirmed her identity, scannered the laber for the collection tube and cleared her for testing in two minutes. what was Professor Smith's throuput time in terms of seconds?

a. 420 seconds

b. 300

c 60

d120

e720