No, Brighton.
If the woman said, "I'm sorry, love, I've been distracted with work and the kids, I didn't realise it had got so seldom. I do enjoy having sex with you and want us to be closer". Then problem solved.
If the woman said "I'm sorry, love, I've been bloody exhausted with work and the kids, I know you do all you can to help but I'm just too tired. My big presentation will be over next week and they I'll be more relaxed and promise to focus on you". Then problem solved.
If the woman said "I'm sorry, love, I've been bloody exhausted with work and the kids, you won't lift a finger to help and frankly this does not make me want to have sex with you". Then the marriage has serious problems - a lazy entitled man who thinks domestic responsibilities aren't his problem. The problem here is that he is unlikely to realise he is reason he wife is disinterested in sex, and then go on to pester and whine. When she gives in due to exhaustion, that is rape. But a man who sees his wife as skivvy and domestic slave is equally unlikely to care about showing her respect and consideration in bed.
If the woman said "I'm sorry love, you're wonderful and I love you very much but I just don't want sex more often", we're back to the man being left with your options a) and b). He can try to talk his wife into seeking treatment or exploring what might get her in the mood (a romantic break away from the kids?), but any continued pressure for sex when she has clearly stated her position is coercion. And if she gives in to the coercion, it's rape.