A domain is modeled by three Boolean variables Toothache, Cavity and Catch. They stand for the propositions 'the patient has a toothache'; 'the patient has a cavity'; 'the dentist catches in the patients tooth with his nasty steel probe', respectively.

The table shows the joint probabilities of the model.

	Toothache		^toothache
	Catch	^catch	catch	^catch
Cavity	0.108	0.012	0.072	0.008
^cavity	0.016	0.064	0.144	0.576

Consider the following statements.

(i) P(^toothache|cavity) = 0.34

(ii) The variables Toothache and Catch are conditionally independent given Cavity

= true.

Which of these statements are true

	a.	only (i) is true
	b.	only (ii) is true
	c.	both (i) and (ii) are true
	d.	both (i) and (ii) are false.