Does the firm need to alter its choices of C and L to decrease cost? A. Yes, they need to increase Upper Lincrease L which would cause MP Subscript Upper LMPL to decreasedecrease and MP Subscript Upper CMPC to increaseincrease. B. Yes, they need to increase Upper Cincrease C which would cause MP Subscript Upper LMPL to increaseincrease and MP Subscript Upper CMPC to decreasedecrease. C. Yes, they need to increase Upper Lincrease L which would cause MP Subscript Upper LMPL to increaseincrease and MP Subscript Upper CMPC to decreasedecrease. D. Yes, they need to increase Upper Cincrease C which would cause MP Subscript Upper LMPL to decreasedecrease and MP Subscript Upper CMPC to increaseincrease. E. No, they are producing at the cost minimizing levels of C and L.