Question: The decryption algorithm in simply throws away the first two bits of the ciphertext and then calls . Dec. ( a ) Does have CPA$

The decryption algorithm in simply throws away the first two bits of the ciphertext and then calls .Dec.
(a)Does have CPA$ security? Prove or disprove (if disproving, show a distinguisher and calculate its advantage).
(b)DoeshaveCPAsecurity?Proveordisprove(ifdisproving,showadistinguisherand calculate its advantage).

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