Bro . Last ko paper folding ko answer chai (d) hunxa . kinaki 9/4/7 ta baira dekhinu paryoni . Tara hajurko ta vitra lukyo . sorry but right answer chai (d) hunxa . Hajurko pani sahi nai xa tara vitra paryo . Kinna vane hamilai question ma baira dekhaiyeko xa. sorry for this.