Identify the following studies as a survey, observational study, or an experiment, and provide a discussion for your response.

A.A study investigated whether males can woke up early in the morning than females if they slept late in the night. Thirty randomly selected male and female participants were instructed to spend 4 hours on the screen and sleep after 2 am. The time they woke up in the morning is recorded for each participants.

B.An Aurak student is collecting data on students' mathematical skills by asking 4 basic Maths questions to students in selected courses and recording how the students respond to the questions.

C.VOX cinema has decided to stream Turkish movies in a bid to expand its sales. The cinema wants to find out what customers feel about the new plan. The Cinema manager has hired a data collector to ask randomly selected people their opinion on the introduction of Turkish movies. In the end, the Cinema management found out that 80% of the people asked favored the introduction of new movies. .

D.To investigate whether the curing effect of a given drug depends on gender, two randomly selected groups of boys and girls were given this drug while two other randomly selected groups of boys and girls were given a placebo.

E.The RTA conducts annual studies on drivers' seatbelt use at a random selection of roadway sites in each emirates in the UAE. To determine if seatbelt are properly used, data are analyzed yearly.