1) In terms of tense, the sentences 'Katherine Rowe's blue-hai...

1) In terms of tense, the sentences "Katherine Rowe's blue-haired avatar was flying across agrassy landscape", "Some students had already gathered online." and "On a square coffee table
sat a short stack of original issues of the magazine..." are respectively in the
a) present continuous, present perfect, simple past.
b) past perfect continuous, past perfect, past perfect.
c) past continuous, past perfect, simple past.
d) past continuous, simple past, simple present.​