last question on puts and calls if anyone is awake

Protective put is: long put long underlying asset Covered Call is: short call long underlying asset Synthetic put is: ???

Synthetic put is equal to C + X/(1+RFR)^T - S C = call option X/(1+RFR)^d = borrowing at the risk free rate S = (short) the underlying stock check out LOS 70.j cheers

Get to bed you guys!