In Isokinetic air sampling :
(A) The inlet is faced against the prevailing wind
(B) Sampling flow rate is chosen so that the inlet speed is the same as the wind speed
(C) There should be the least possibility of distortion of particles sampled
Choose the most appropriate answer from the options given below :
1
(A), (B) and (C)
2
(B) and (C) Only
3
(A) and (C) Only
4
(A) and (B) Only