A risky corporate bond is currently trading at $90 and is going to be worth either $100 or $80 next year. At the same time, a zero-coupon risk-free government bond with a face value of $100 is trading at $100. Consider stock A which is going to be worth either $30 or $20 next year. What is the no- arbitrage value of stock A today? it is impossible to price stock A. $20. $25. $15. $10