were or are

During the oral presentation last week, students _____ asked to begin with storytelling.
Choose one answer.

a. were

b. is

c. was

d. are

i think B and C is totally wrong. I got confused whether to use ‘were’ or ‘are’ in this case. As the beginning of the sentence is ‘during’

someone can help me?

‘Last week’ is the clue. It is in the past, so you have to use ‘were’.