Which sentence demonstrates correct subject-verb agreement? A: Where are the watering cans stored? B: Where are the hookup for the hose? C: Where is the plants growing? D: Where is the students going to weed?

Ithink it's a. but i could be wrong because it might be b. but it's not the other two

It could be said that the major gets upset because his wife has just died in an unexpected way. the major has received medals for his valor in battle but he never brags about it instead nick does. however, this is not what bothers him but that his young wife has died.