250 mL of a waste solution obtained from the workshop of a goldsmith contains 0.1 M AgNO₃ and 0.1M AuCl . The solution was electrolyzed at 2V by passing current of 1A for 15 min .The metal/metals electrode deposited will be [E^o(Ag⁺/Ag) = 0.8V , E^o(Au/Au⁺) = 1.69V ]

(a) Ag and Au in equal mass proportion

(b) Ag and Au in proportion to their atomic weights.

(c) Only gold

(d) Only silver