𝑋 and π‘Œ are two independent random variables with variances 1 and 2, respectively

Q. 𝑋 and π‘Œ are two independent random variables with variances 1 and 2, respectively. Let 𝑍 = 𝑋 βˆ’ π‘Œ. The variance of 𝑍 is

(A) 0Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β  (B) 1Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β  (C) 2Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β Β  (D) 3

Ans: 3

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