Signals and Systems - Engineering

Q1:

Assertion (A): In order that f(t) is Laplace transformable, it is necessary that for real positive σ1Reason (R): If f(t) is known we can find F(s) and vice versa.

A Both A and R are correct and R is correct explanation of A

B Both A and R are correct but R is not correct explanation of A

C A is true, R is false

D A is false, R is true

ANS:B - Both A and R are correct but R is not correct explanation of A

Please elaborate (A) ?