Which statement is used to iterate itself over a range of values or a sequence?

1. if
2. while
3. do-while
4. for

Find the output of the following Python program:

for x in range(1, 20, 3):
   print(x, end =',')

1. 1,20,3,
2. 1,4,7,10,13,16,19,
3. 13,6,9,12,15,18,
4. 20,40,60,80,100,

Assertion (A): When a set of statements is indented under the same block, starting from the same indentation, it is said to be a compound statement.

Reasoning (R): Compound Statement begins with a header ending with a colon (:) sign and the statements under the same indentation are marked as a block.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Assertion (A): The conditional flow of control is implemented using if statement.

Reasoning (R): A statement or statements (block of code) are indented (usually 4 spaces) inside the if statement and are executed only if the condition evaluates to true, otherwise they are ignored.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.