Which statements regarding fiber$-$optic cabling are INCORRECT $($More than one statement applies$)?$

a$.$

Fiber$-$optic cabling has a low resistance to signal noise.

b$.$

$1000$Base$-$LX and $1000$Base$-$SX are $10-$Gigabit Ethernet standards for fiber$-$optic cable.

c$.$

Fiber$-$optic cable is cheaper than copper cabling.

d$.$

Older fiber networks might use ST $($Straight Tip$)$ or SC $($Standard Connector$)$ connectors.